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blue · cool

#749baf

a balanced, soft blue · cool · closest name: Light Slate Gray

Token name suggestion: Atlas Sapphire

RGB
116, 155, 175
HSL
200°, 27%, 57%
CMYK
34, 11, 0, 31
Luminance
0.3025

#749baf is a balanced soft blue, 200° on the wheel and 85/100 on the cool side. Put black text on it (7.05:1). As text it scores 2.98:1 on white — use #527A8F instead. Nearest name is Light Slate Gray, nearest Tailwind family is sky.

hsl(200 27% 57%)rgb(116 155 175)Base step 500AAA inkCool

At a glance

Every number on this page in one read: what #749baf is made of, how bright it looks, and which way it leans.

Hex
#749baf
Hue
200°
blue
Saturation
27%
soft
Lightness
57%
balanced
Brightness
69%
HSV value
Perceived
58%
weighted brightness
Luminance
0.3025
WCAG relative
Temperature
Cool
85/100 cool
Color family
Blue
Tone
Soft
Best ink
Black
7.05:1
Closest name
Light Slate Gray
ΔE2000 8.2
Chroma
16.9
LCH, 0–130ish
OKLCH L
0.668
perceptual lightness
Tailwind
sky
500 · ΔE 11.5
Web-safe
#669999
nearest of 216
Where it sits
Hue200° of 360°
Saturation27%
Lightness57%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #749baf.

Temperature
Warm ← → Cool85% 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
Red12%
Green77%
Blue10%

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

Every format

HEX#749baf
HEX (8-digit)#749bafff
RGBrgb(116, 155, 175)
RGBArgba(116, 155, 175, 1)
HSLhsl(200, 27%, 57%)
HSV / HSBhsv(200, 34%, 69%)
HWBhwb(200 45% 31%)
CMYKcmyk(34%, 11%, 0%, 31%)
LABlab(61.9 -8.3 -14.7)
LCHlch(61.9 16.9 240.4)
OKLCHoklch(0.668 0.052 230.8)
XYZ (D65)xyz(26.66, 30.25, 44.98)
Decimal7642031
Display P3color(display-p3 0.455 0.608 0.686)
Web-safe#669999

Copy-ready code

every platformclick to select
/* CSS */
color: #749baf;
background-color: #749baf;
/* CSS custom property */
--brand: #749baf;
/* Tailwind (arbitrary) */
class="text-[#749baf] bg-[#749baf]"
/* SCSS */
$brand: #749baf;
/* SwiftUI */
Color(red: 0.455, green: 0.608, blue: 0.686)
/* UIKit */
UIColor(red: 0.455, green: 0.608, blue: 0.686, alpha: 1)
/* Android XML */
<color name="brand">#749BAF</color>
/* Android Compose */
Color(0xFF749BAF)
/* Flutter */
Color(0xFF749BAF)
/* Python / OpenCV (BGR) */
(175, 155, 116)
/* Python / PIL (RGB) */
(116, 155, 175)
/* Java AWT */
new Color(116, 155, 175)
/* .NET */
Color.FromArgb(255, 116, 155, 175)
/* OpenGL / Unity (0–1) */
(0.4549f, 0.6078f, 0.6863f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{116,155,175}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #749baf 85%, white);
border-color: color-mix(in oklab, #749baf 40%, transparent);
/* theme-aware in one line */
color: light-dark(#2F4551, #D8E3E9);
/* relative colour syntax */
--hover: hsl(from #749baf 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: #F6F8F9;
  --brand-100: #ECF1F3;
  --brand-200: #D6E0E6;
  --brand-300: #B8CCD6;
  --brand-400: #94B2C1;
  --brand-500: #749baf;
  --brand-600: #59859B;
  --brand-700: #4B6F81;
  --brand-800: #3C5968;
  --brand-900: #2E424C;
  --brand-950: #1D2930;
  --brand: #749baf;
  --brand-ink: #000000;
  --brand-surface: #F5F8F9;
  --brand-border: #CBDAE1;
  --brand-hover: #5E8BA2;
  --brand-pressed: #50778B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #151E24;
    --brand-ink: #D8E3E9;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F6F8F9',
        100: '#ECF1F3',
        200: '#D6E0E6',
        300: '#B8CCD6',
        400: '#94B2C1',
        500: '#749baf',
        600: '#59859B',
        700: '#4B6F81',
        800: '#3C5968',
        900: '#2E424C',
        950: '#1D2930',
        DEFAULT: '#749baf',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F6F8F9,
  '100': #ECF1F3,
  '200': #D6E0E6,
  '300': #B8CCD6,
  '400': #94B2C1,
  '500': #749baf,
  '600': #59859B,
  '700': #4B6F81,
  '800': #3C5968,
  '900': #2E424C,
  '950': #1D2930,
);
$brand-base: #749baf;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F6F8F9", "$type": "color" },
      "100": { "$value": "#ECF1F3", "$type": "color" },
      "200": { "$value": "#D6E0E6", "$type": "color" },
      "300": { "$value": "#B8CCD6", "$type": "color" },
      "400": { "$value": "#94B2C1", "$type": "color" },
      "500": { "$value": "#749baf", "$type": "color" },
      "600": { "$value": "#59859B", "$type": "color" },
      "700": { "$value": "#4B6F81", "$type": "color" },
      "800": { "$value": "#3C5968", "$type": "color" },
      "900": { "$value": "#2E424C", "$type": "color" },
      "950": { "$value": "#1D2930", "$type": "color" }
    },
    "brandInk": { "$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 #749baf · 7.05:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.98:1
AA fail · AA large fail · AAA fail
Aa
Black text · 7.05:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #749baf as text scores 2.98:1 on white and 7.05:1 on black.
Best tinted ink on it, if plain black or white feels flat: #2F4551 at 3.37:1.

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
#527A8F · 4.63:1
AA on white−13% L
#527A8F
The quick fox
#3E5C6B · 7.12:1
AAA on white−24% L
#3E5C6B
The quick fox
#749baf · 7.05:1
AA on blackalready passes
#749baf
The quick fox
#749baf · 7.05:1
AAA on blackalready passes
#749baf

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #7199AD 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
#749baf on white: 2.98:1
AA ✗ fail · AA-large · AAA
Aa
#749baf on black: 7.05:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #749baf as text on that neutral, and that neutral as text on #749baf.

NeutralRatioBoth directions
White2.98:1AaAa
Slate 502.85:1AaAa
Slate 1002.72:1AaAa
Slate 2002.42:1AaAa
Slate 3002.01:1AaAa
Slate 4001.16:1AaAa
Slate 5001.60:1AaAa
Slate 6002.54:1AaAa
Slate 7003.48:1AaAa
Slate 8004.91:1AaAa
Slate 9005.99:1AaAa
Black7.05:1AaAa
Colour vision deficiency
true color
protanopia · #9199B0
deuteranopia · #8993AF
tritanopia · #60A1A1

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. #749baf is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F6F8F9
#ECF1F3
#D6E0E6
#B8CCD6
#94B2C1
#749baf
#59859B
#4B6F81
#3C5968
#2E424C
#1D2930
Base = 500Lightest = 50 · #F6F8F9Darkest = 950 · #1D2930Text 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 0.013 230.8);
  --brand-100: oklch(0.94 0.021 230.8);
  --brand-200: oklch(0.88 0.031 230.8);
  --brand-300: oklch(0.80 0.041 230.8);
  --brand-400: oklch(0.72 0.048 230.8);
  --brand-500: oklch(0.64 0.052 230.8);
  --brand-600: oklch(0.56 0.052 230.8);
  --brand-700: oklch(0.48 0.049 230.8);
  --brand-800: oklch(0.40 0.044 230.8);
  --brand-900: oklch(0.32 0.036 230.8);
  --brand-950: oklch(0.24 0.029 230.8);
}

Colors that work with #749baf

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#F5F8F9
Tinted page background
Border#CBDAE1
Hairlines and dividers
Muted text#547D92
Captions on the surface
Accent#B37670
Second voice, not a rival
Dark variant#2F4551
Hover, pressed, headers
Light variant#EFF3F6
Selected rows, tints
Dark surface#151E24
Dark-mode background
Hover#5E8BA2
One step down in lightness
Pressed#50778B
Two steps down
Disabled#BECDD5
Chroma pulled out
Focus ring#77A8C0
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 #749baf

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

Works well for
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #2F4551
Safe as a 1px border on white
No — use #7199AD

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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. 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
  • FormalityMedium
  • EnergyMedium
  • Weight43/100
  • 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#AF8874
Analogous left#74AFA6
Analogous right#747EAF
Split-complement 1#AF747E
Split-complement 2#AFA674
Triadic 1#AF749B
Triadic 2#9BAF74
Tetradic#A674AF
On the wheel
Base+30°−30°+120°+240°+180°200°

#749baf sits at 200°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red45.5%
Green60.8%
Blue68.6%
R · 0–255
116
0x74
G · 0–255
155
0x9b
B · 0–255
175
0xaf

CMYK percentages

Cyan33.7%
Magenta11.4%
Yellow0.0%
Key (black)31.4%

Total ink coverage is 77%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#749baf text on a black background

contrast 7.05:1

Card sample

#749baf text on a white background

contrast 2.98:1

Card sample

#749baf on grey

2.72:1

#749baf on its own surface

2.79:1

#749baf on its dark surface

5.67:1

CSS3 live lab

Text font color

The quick brown fox

color: #749baf;
Background color
Panel with #749baf background
background-color: #749baf;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #749baf;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(116, 155, 175, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(116, 155, 175, 0.45);
Border & gradient
Gradient panel
border: 3px solid #749baf;
background: linear-gradient(135deg, #749baf, #7474AF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #749baf, #8374AF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #749baf;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #749baf;
caret-color: #749baf;
Left rule
Pull quote or callout
border-left: 4px solid #749baf;
Ring + tint
Selected chip
background: #EFF3F6;
box-shadow: inset 0 0 0 2px #749baf;
Conic badge
68%
background: conic-gradient(#749baf 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #749baf 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(116, 155, 175, 0.5)
rgb(116 155 175 / 50%)
#749baf80
hsl(200 27% 57% / 50%)
color-mix(in srgb, #749baf 50%, transparent)
Alpha8-digit hexFlat on white
10%#749baf1a#F1F5F7
20%#749baf33#E3EBEF
40%#749baf66#C7D7DF
60%#749baf99#ACC3CF
80%#749bafcc#90AFBF

Gradients from #749baf

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, #9BB7C5, #749baf 45%, #2F4551);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #749baf, #6761A4);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #749baf, #AF8874);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #AEC5D1 0%, #749baf 45%, #2F4551 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5F8F9, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #95C2B7 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #888CBA 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #2F4551 0%, transparent 65%), #749baf;

Monochromatic scale

Palettes built from #749baf

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.

#749baf 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

Converts to four-color process without much drama. Proof it anyway.

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 7.05:1.

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.

#749baf, answered

What color is #749baf?

#749baf is a balanced soft blue, closest to Light Slate Gray (ΔE2000 8.2). It sits at 200° on the hue wheel with 27% saturation and 57% lightness, which reads as cool.

What is the RGB value of #749baf?

rgb(116, 155, 175) — 116 red, 155 green and 175 blue out of 255, or 45.5% / 60.8% / 68.6% by channel.

What is #749baf in HSL and HSV?

hsl(200, 27%, 57%) and hsv(200, 34%, 69%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #749baf a light or a dark color?

It is a mid-tone. Relative luminance is 0.3025 and perceived brightness is 58%, so black text on it reaches 7.05:1.

Should I use black or white text on #749baf?

Black. It scores 7.05:1 against #749baf, versus 2.98:1 for white — AAA at any size.

Is #749baf accessible on a white background?

#749baf on white scores 2.98:1, which fails WCAG AA at every size. Darken it to #527A8F to reach 4.5:1, or #3E5C6B for 7:1.

What is the complementary color of #749baf?

#AF8874 sits directly opposite on the wheel. Softer options are the split-complements #AF747E and #AFA674, which give the same contrast with far less vibration.

What colors go well with #749baf?

For interface work: #F5F8F9 as the surface, #CBDAE1 for borders, #547D92 for secondary text, #B37670 as an accent and #2F4551 for hover and pressed states. For a palette, the analogous pair #74AFA6 and #747EAF stays calm, while #AF8874 is the loudest partner.

What is #749baf in CMYK for printing?

cmyk(34%, 11%, 0%, 31%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #749baf warm or cool?

Cool — it scores 85 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #74AFAD; nudged cooler, #7293B1.

Which Tailwind color is closest to #749baf?

The sky family — its 500 step is #0ea5e9, ΔE2000 11.5 away. That is a visible difference, so define #749baf as a custom token rather than reaching for the built-in.

How do I use #749baf in Tailwind CSS?

Inline it as an arbitrary value with bg-[#749baf] or text-[#749baf], 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 #749baf with 50% opacity?

rgba(116, 155, 175, 0.5), or #749baf80 in eight-digit hex. Over white that composites to #BACDD7; over black, #3A4E58.

Is #749baf a web-safe color?

No. The nearest web-safe colour is #669999, ΔE2000 10.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #749baf 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 moderate chroma the association is present but not shouted.

What gradient works with #749baf?

The safest is same-hue elevation: linear-gradient(135deg, #9BB7C5, #749baf 45%, #2F4551). For more colour, a short hue run to #6761A4 keeps it rich without turning muddy.

Work with #749baf in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #749baf at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.