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blue · cool

#1985cf

a balanced, electric blue · cool · closest name: Steel Blue

Token name suggestion: Atlas Cobalt

RGB
25, 133, 207
HSL
204°, 78%, 46%
CMYK
88, 36, 0, 19
Luminance
0.2149

#1985cf is a balanced electric blue, 204° on the wheel and 98/100 on the cool side. Put black text on it (5.30:1). As text it scores 3.96:1 on white — large text only. Nearest name is Steel Blue, nearest Tailwind family is blue.

hsl(204 78% 46%)rgb(25 133 207)Base step 600AA inkCool

At a glance

Every number on this page in one read: what #1985cf is made of, how bright it looks, and which way it leans.

Hex
#1985cf
Hue
204°
blue
Saturation
78%
electric
Lightness
46%
balanced
Brightness
81%
HSV value
Perceived
49%
weighted brightness
Luminance
0.2149
WCAG relative
Temperature
Cool
98/100 cool
Color family
Blue
Tone
Electric
Best ink
Black
5.30:1
Closest name
Steel Blue
ΔE2000 3.7
Chroma
46.1
LCH, 0–130ish
OKLCH L
0.597
perceptual lightness
Tailwind
blue
500 · ΔE 7.5
Web-safe
#0099CC
nearest of 216
Where it sits
Hue204° of 360°
Saturation78%
Lightness46%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #1985cf.

Temperature
Warm ← → Cool98% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red1%
Green78%
Blue21%

Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.

Every format

HEX#1985cf
HEX (8-digit)#1985cfff
RGBrgb(25, 133, 207)
RGBArgba(25, 133, 207, 1)
HSLhsl(204, 78%, 46%)
HSV / HSBhsv(204, 88%, 81%)
HWBhwb(204 10% 19%)
CMYKcmyk(88%, 36%, 0%, 19%)
LABlab(53.5 -1.8 -46.1)
LCHlch(53.5 46.1 267.7)
OKLCHoklch(0.597 0.144 245.7)
XYZ (D65)xyz(20.05, 21.48, 62.11)
Decimal1672655
Display P3color(display-p3 0.098 0.522 0.812)
Web-safe#0099CC

Copy-ready code

every platformclick to select
/* CSS */
color: #1985cf;
background-color: #1985cf;
/* CSS custom property */
--brand: #1985cf;
/* Tailwind (arbitrary) */
class="text-[#1985cf] bg-[#1985cf]"
/* SCSS */
$brand: #1985cf;
/* SwiftUI */
Color(red: 0.098, green: 0.522, blue: 0.812)
/* UIKit */
UIColor(red: 0.098, green: 0.522, blue: 0.812, alpha: 1)
/* Android XML */
<color name="brand">#1985CF</color>
/* Android Compose */
Color(0xFF1985CF)
/* Flutter */
Color(0xFF1985CF)
/* Python / OpenCV (BGR) */
(207, 133, 25)
/* Python / PIL (RGB) */
(25, 133, 207)
/* Java AWT */
new Color(25, 133, 207)
/* .NET */
Color.FromArgb(255, 25, 133, 207)
/* OpenGL / Unity (0–1) */
(0.0980f, 0.5216f, 0.8118f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{25,133,207}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #1985cf 85%, white);
border-color: color-mix(in oklab, #1985cf 40%, transparent);
/* theme-aware in one line */
color: light-dark(#0E4972, #D3E3EE);
/* relative colour syntax */
--hover: hsl(from #1985cf h s calc(l - 7));

Design tokens

The same ramp in the four formats a team actually needs. Paste one and the whole palette lands with it.

css custom propertiesclick to select
:root {
  --brand-50: #F3F8FC;
  --brand-100: #E6F1F9;
  --brand-200: #C7E2F5;
  --brand-300: #9BCFF3;
  --brand-400: #69B7ED;
  --brand-500: #379FE7;
  --brand-600: #1985cf;
  --brand-700: #1675B6;
  --brand-800: #125E92;
  --brand-900: #114569;
  --brand-950: #0B2B42;
  --brand: #1985cf;
  --brand-ink: #000000;
  --brand-surface: #F4F8FA;
  --brand-border: #C0DAED;
  --brand-hover: #1571AF;
  --brand-pressed: #115C8F;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141E24;
    --brand-ink: #D3E3EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3F8FC',
        100: '#E6F1F9',
        200: '#C7E2F5',
        300: '#9BCFF3',
        400: '#69B7ED',
        500: '#379FE7',
        600: '#1985cf',
        700: '#1675B6',
        800: '#125E92',
        900: '#114569',
        950: '#0B2B42',
        DEFAULT: '#1985cf',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3F8FC,
  '100': #E6F1F9,
  '200': #C7E2F5,
  '300': #9BCFF3,
  '400': #69B7ED,
  '500': #379FE7,
  '600': #1985cf,
  '700': #1675B6,
  '800': #125E92,
  '900': #114569,
  '950': #0B2B42,
);
$brand-base: #1985cf;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3F8FC", "$type": "color" },
      "100": { "$value": "#E6F1F9", "$type": "color" },
      "200": { "$value": "#C7E2F5", "$type": "color" },
      "300": { "$value": "#9BCFF3", "$type": "color" },
      "400": { "$value": "#69B7ED", "$type": "color" },
      "500": { "$value": "#379FE7", "$type": "color" },
      "600": { "$value": "#1985cf", "$type": "color" },
      "700": { "$value": "#1675B6", "$type": "color" },
      "800": { "$value": "#125E92", "$type": "color" },
      "900": { "$value": "#114569", "$type": "color" },
      "950": { "$value": "#0B2B42", "$type": "color" }
    },
    "brandInk": { "$value": "#000000", "$type": "color" }
  }
}

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #1985cf · 5.30:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 3.96:1
AA fail · AA large pass · AAA fail
Aa
Black text · 5.30:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #1985cf as text scores 3.96:1 on white and 5.30:1 on black.
Best tinted ink on it, if plain black or white feels flat: #0E4972 at 2.39:1.

Make it accessible

A contrast checker tells you that you failed. This tells you what to ship instead — same hue, same saturation, lightness moved only as far as WCAG demands.

The quick fox
#1779BD · 4.66:1
AA on white−4% L
#1779BD
The quick fox
#115C8F · 7.12:1
AAA on white−14% L
#115C8F
The quick fox
#1985cf · 5.30:1
AA on blackalready passes
#1985cf
The quick fox
#309CE6 · 7.02:1
AAA on black+9% L
#309CE6

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #1985CF is enough for headings on white. Non-text elements such as icons, chart strokes and focus rings also sit at 3:1 under WCAG 2.2 (1.4.11).

Accessibility — WCAG contrast

Aa
#1985cf on white: 3.96:1
AA ✗ fail · AA-large · AAA
Aa
#1985cf on black: 5.30:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #1985cf as text on that neutral, and that neutral as text on #1985cf.

NeutralRatioBoth directions
White3.96:1AaAa
Slate 503.79:1AaAa
Slate 1003.62:1AaAa
Slate 2003.22:1AaAa
Slate 3002.67:1AaAa
Slate 4001.55:1AaAa
Slate 5001.20:1AaAa
Slate 6001.91:1AaAa
Slate 7002.61:1AaAa
Slate 8003.69:1AaAa
Slate 9004.50:1AaAa
Black5.30:1AaAa
Colour vision deficiency
true color
protanopia · #6188D2
deuteranopia · #4779CE
tritanopia · #0097A0

Roughly one man in twelve has some form of colour vision deficiency. If any of the three panels above is hard to tell apart from a neighbouring colour in your palette, add a shape, an icon or a label so the meaning does not rest on hue alone.

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #1985cf is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3F8FC
#E6F1F9
#C7E2F5
#9BCFF3
#69B7ED
#379FE7
#1985cf
#1675B6
#125E92
#114569
#0B2B42
Base = 600Lightest = 50 · #F3F8FCDarkest = 950 · #0B2B42Text step on white = 700
Perceptual ramp — OKLCH

The same eleven steps expressed in OKLCH, where equal lightness numbers actually look equally spaced. HSL ramps go muddy in the yellows and washed out in the blues; this one does not. Modern browsers render it natively — the hex ramp above is the fallback.

50100200300400500600700800900950
oklch tokensclick to select
:root {
  --brand-50: oklch(0.97 0.036 245.7);
  --brand-100: oklch(0.94 0.058 245.7);
  --brand-200: oklch(0.88 0.087 245.7);
  --brand-300: oklch(0.80 0.112 245.7);
  --brand-400: oklch(0.72 0.133 245.7);
  --brand-500: oklch(0.64 0.144 245.7);
  --brand-600: oklch(0.56 0.144 245.7);
  --brand-700: oklch(0.48 0.136 245.7);
  --brand-800: oklch(0.40 0.121 245.7);
  --brand-900: oklch(0.32 0.101 245.7);
  --brand-950: oklch(0.24 0.079 245.7);
}

Colors that work with #1985cf

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#F4F8FA
Tinted page background
Border#C0DAED
Hairlines and dividers
Muted text#4B7A9B
Captions on the surface
Accent#D43214
Second voice, not a rival
Dark variant#0E4972
Hover, pressed, headers
Light variant#E8F4FC
Selected rows, tints
Dark surface#141E24
Dark-mode background
Hover#1571AF
One step down in lightness
Pressed#115C8F
Two steps down
Disabled#9AB0BE
Chroma pulled out
Focus ring#0F93EE
Offset from the fill so it reads
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

In real components

The same eight roles, wired into the interface patterns you will actually build with them. Every state below is a computed value, not a mock-up.

Buttons and states
Save changesHoverPressedDisabled
OutlineSubtleLinkFocused
Form field
you@company.com

Focus ring uses the light variant so the field still reads as one shape.

Send me product updates
Notice
Your export is ready

The file stays available for seven days. Download it before it expires.

NewBetaDraft
Data
Storage used68%
Acme LtdActive
NorthwindTrial
GlobexActive

How to use #1985cf

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Headings from 24px up on white
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Small text on white — under 4.5:1
  • Full-page backgrounds — tiring over long sessions
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
24px / 18.66px bold
Safe as a fill behind white type
No — use #0E4972
Safe as a 1px border on white
Yes

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

trustedcalmcompetentcorporate

The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The mid lightness keeps it versatile in both themes.

Worth knowing

It is also the most crowded hue on the web. Distinctiveness has to come from your other choices.

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight55/100
  • TemperatureCool
  • ApproachabilityReserved

Colour associations are cultural and vary by market. Treat these as a starting point for a conversation with your audience, not a finding about them.

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#CF6319
Analogous left#19CFBE
Analogous right#192ACF
Split-complement 1#CF192A
Split-complement 2#CFBE19
Triadic 1#CF1985
Triadic 2#85CF19
Tetradic#BE19CF
On the wheel
Base+30°−30°+120°+240°+180°204°

#1985cf sits at 204°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red9.8%
Green52.2%
Blue81.2%
R · 0–255
25
0x19
G · 0–255
133
0x85
B · 0–255
207
0xcf

CMYK percentages

Cyan87.9%
Magenta35.7%
Yellow0.0%
Key (black)18.8%

Total ink coverage is 142%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#1985cf text on a black background

contrast 5.30:1

Card sample

#1985cf text on a white background

contrast 3.96:1

Card sample

#1985cf on grey

3.62:1

#1985cf on its own surface

3.71:1

#1985cf on its dark surface

4.27:1

CSS3 live lab

Text font color

The quick brown fox

color: #1985cf;
Background color
Panel with #1985cf background
background-color: #1985cf;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #1985cf;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(25, 133, 207, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(25, 133, 207, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1985cf;
background: linear-gradient(135deg, #1985cf, #2619CF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #1985cf, #5419CF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #1985cf;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #1985cf;
caret-color: #1985cf;
Left rule
Pull quote or callout
border-left: 4px solid #1985cf;
Ring + tint
Selected chip
background: #E8F4FC;
box-shadow: inset 0 0 0 2px #1985cf;
Conic badge
68%
background: conic-gradient(#1985cf 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #1985cf over white; the bottom row is the same alpha over a checkerboard, so you can see what survives on a photo or a video.

Bottom row of hexes is the flattened result over white — use those when a design tool refuses transparency, or when you need a solid fallback.

alpha in every syntaxclick to select
rgba(25, 133, 207, 0.5)
rgb(25 133 207 / 50%)
#1985cf80
hsl(204 78% 46% / 50%)
color-mix(in srgb, #1985cf 50%, transparent)
Alpha8-digit hexFlat on white
10%#1985cf1a#E8F3FA
20%#1985cf33#D1E7F5
40%#1985cf66#A3CEEC
60%#1985cf99#75B6E2
80%#1985cfcc#479DD9

Gradients from #1985cf

Six recipes, each built from this hex and shown with the exact CSS that produced it.

Elevation
Same hue, three lightnesses — safe anywhere
background: linear-gradient(135deg, #3EA2E8, #1985cf 45%, #0E4972);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #1985cf, #2F16B4);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #1985cf, #CF6319);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #59B0EB 0%, #1985cf 45%, #0E4972 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F8FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #35E6C7 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #2224E4 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #0E4972 0%, transparent 65%), #1985cf;

Monochromatic scale

Palettes built from #1985cf

Shades — darker

Tints — lighter

Tones — desaturated

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#1985cf in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
TechnologyFinanceHealthcareEnterprise SaaS
Common UI roles
ButtonsLinksFocus statesCharts
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

On screens

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 5.30:1.

Explore nearby colors

Small, deliberate steps away from this hex — useful when you are hunting for the version of a colour that finally feels right.

#1985cf, answered

What color is #1985cf?

#1985cf is a balanced electric blue, closest to Steel Blue (ΔE2000 3.7). It sits at 204° on the hue wheel with 78% saturation and 46% lightness, which reads as cool.

What is the RGB value of #1985cf?

rgb(25, 133, 207) — 25 red, 133 green and 207 blue out of 255, or 9.8% / 52.2% / 81.2% by channel.

What is #1985cf in HSL and HSV?

hsl(204, 78%, 46%) and hsv(204, 88%, 81%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #1985cf a light or a dark color?

It is a mid-tone. Relative luminance is 0.2149 and perceived brightness is 49%, so black text on it reaches 5.30:1.

Should I use black or white text on #1985cf?

Black. It scores 5.30:1 against #1985cf, versus 3.96:1 for white — AA at any size.

Is #1985cf accessible on a white background?

#1985cf on white scores 3.96:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #1779BD to reach 4.5:1, or #115C8F for 7:1.

What is the complementary color of #1985cf?

#CF6319 sits directly opposite on the wheel. Softer options are the split-complements #CF192A and #CFBE19, which give the same contrast with far less vibration.

What colors go well with #1985cf?

For interface work: #F4F8FA as the surface, #C0DAED for borders, #4B7A9B for secondary text, #D43214 as an accent and #0E4972 for hover and pressed states. For a palette, the analogous pair #19CFBE and #192ACF stays calm, while #CF6319 is the loudest partner.

What is #1985cf in CMYK for printing?

cmyk(88%, 36%, 0%, 19%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #1985cf warm or cool?

Cool — it scores 98 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #19C8CF; nudged cooler, #146CBA.

Which Tailwind color is closest to #1985cf?

The blue family — its 500 step is #3b82f6, ΔE2000 7.5 away. That is a visible difference, so define #1985cf as a custom token rather than reaching for the built-in.

How do I use #1985cf in Tailwind CSS?

Inline it as an arbitrary value with bg-[#1985cf] or text-[#1985cf], or register the whole ramp under theme.extend.colors.brand so you get bg-brand-500 and friends. The generated 50–950 scale on this page is ready to paste into your config.

What is #1985cf with 50% opacity?

rgba(25, 133, 207, 0.5), or #1985cf80 in eight-digit hex. Over white that composites to #8CC2E7; over black, #0D4368.

Is #1985cf a web-safe color?

No. The nearest web-safe colour is #0099CC, ΔE2000 9.4 away. The palette only matters for legacy displays and some email clients now.

What does the color #1985cf mean?

As a blue, it reads trusted, calm, competent. The default of institutions for a reason: blue is read as stable and safe across nearly every culture that has been surveyed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #1985cf?

The safest is same-hue elevation: linear-gradient(135deg, #3EA2E8, #1985cf 45%, #0E4972). For more colour, a short hue run to #2F16B4 keeps it rich without turning muddy.

Work with #1985cf in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #1985cf at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.