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blue · cool

#9dafef

a light, vivid blue · cool · closest name: Light Steel Blue

Token name suggestion: Meadow Sapphire

RGB
157, 175, 239
HSL
227°, 72%, 78%
CMYK
34, 27, 0, 6
Luminance
0.4406

#9dafef is a light vivid blue, 227° on the wheel and 91/100 on the cool side. Put black text on it (9.81:1). As text it scores 2.14:1 on white — use #4A6BE1 instead. Nearest name is Light Steel Blue, nearest Tailwind family is blue.

hsl(227 72% 78%)rgb(157 175 239)Base step 300AAA inkCool

At a glance

Every number on this page in one read: what #9dafef is made of, how bright it looks, and which way it leans.

Hex
#9dafef
Hue
227°
blue
Saturation
72%
vivid
Lightness
78%
light
Brightness
94%
HSV value
Perceived
70%
weighted brightness
Luminance
0.4406
WCAG relative
Temperature
Cool
91/100 cool
Color family
Blue
Tone
Vivid
Best ink
Black
9.81:1
Closest name
Light Steel Blue
ΔE2000 8.7
Chroma
35.0
LCH, 0–130ish
OKLCH L
0.764
perceptual lightness
Tailwind
blue
500 · ΔE 16.6
Web-safe
#9999FF
nearest of 216
Where it sits
Hue227° of 360°
Saturation72%
Lightness78%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #9dafef.

Temperature
Warm ← → Cool91% 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
Red16%
Green70%
Blue14%

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

Every format

HEX#9dafef
HEX (8-digit)#9dafefff
RGBrgb(157, 175, 239)
RGBArgba(157, 175, 239, 1)
HSLhsl(227, 72%, 78%)
HSV / HSBhsv(227, 34%, 94%)
HWBhwb(227 62% 6%)
CMYKcmyk(34%, 27%, 0%, 6%)
LABlab(72.3 8.7 -34.0)
LCHlch(72.3 35.0 284.4)
OKLCHoklch(0.764 0.094 271.9)
XYZ (D65)xyz(44.81, 44.06, 87.79)
Decimal10334191
Display P3color(display-p3 0.616 0.686 0.937)
Web-safe#9999FF

Copy-ready code

every platformclick to select
/* CSS */
color: #9dafef;
background-color: #9dafef;
/* CSS custom property */
--brand: #9dafef;
/* Tailwind (arbitrary) */
class="text-[#9dafef] bg-[#9dafef]"
/* SCSS */
$brand: #9dafef;
/* SwiftUI */
Color(red: 0.616, green: 0.686, blue: 0.937)
/* UIKit */
UIColor(red: 0.616, green: 0.686, blue: 0.937, alpha: 1)
/* Android XML */
<color name="brand">#9DAFEF</color>
/* Android Compose */
Color(0xFF9DAFEF)
/* Flutter */
Color(0xFF9DAFEF)
/* Python / OpenCV (BGR) */
(239, 175, 157)
/* Python / PIL (RGB) */
(157, 175, 239)
/* Java AWT */
new Color(157, 175, 239)
/* .NET */
Color.FromArgb(255, 157, 175, 239)
/* OpenGL / Unity (0–1) */
(0.6157f, 0.6863f, 0.9373f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{157,175,239}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #9dafef 85%, white);
border-color: color-mix(in oklab, #9dafef 40%, transparent);
/* theme-aware in one line */
color: light-dark(#12266E, #D3D9EE);
/* relative colour syntax */
--hover: hsl(from #9dafef 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: #F3F5FC;
  --brand-100: #E7EBF8;
  --brand-200: #C9D2F3;
  --brand-300: #9dafef;
  --brand-400: #6E89E7;
  --brand-500: #3E62DF;
  --brand-600: #2249D2;
  --brand-700: #1D3DAF;
  --brand-800: #17318C;
  --brand-900: #152766;
  --brand-950: #0D1840;
  --brand: #9dafef;
  --brand-ink: #000000;
  --brand-surface: #F4F6FA;
  --brand-border: #C0CAED;
  --brand-hover: #7E96EA;
  --brand-pressed: #5F7DE5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #141724;
    --brand-ink: #D3D9EE;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F3F5FC',
        100: '#E7EBF8',
        200: '#C9D2F3',
        300: '#9dafef',
        400: '#6E89E7',
        500: '#3E62DF',
        600: '#2249D2',
        700: '#1D3DAF',
        800: '#17318C',
        900: '#152766',
        950: '#0D1840',
        DEFAULT: '#9dafef',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F3F5FC,
  '100': #E7EBF8,
  '200': #C9D2F3,
  '300': #9dafef,
  '400': #6E89E7,
  '500': #3E62DF,
  '600': #2249D2,
  '700': #1D3DAF,
  '800': #17318C,
  '900': #152766,
  '950': #0D1840,
);
$brand-base: #9dafef;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F3F5FC", "$type": "color" },
      "100": { "$value": "#E7EBF8", "$type": "color" },
      "200": { "$value": "#C9D2F3", "$type": "color" },
      "300": { "$value": "#9dafef", "$type": "color" },
      "400": { "$value": "#6E89E7", "$type": "color" },
      "500": { "$value": "#3E62DF", "$type": "color" },
      "600": { "$value": "#2249D2", "$type": "color" },
      "700": { "$value": "#1D3DAF", "$type": "color" },
      "800": { "$value": "#17318C", "$type": "color" },
      "900": { "$value": "#152766", "$type": "color" },
      "950": { "$value": "#0D1840", "$type": "color" }
    },
    "brandInk": { "$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 #9dafef · 9.81:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.14:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.81:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #9dafef as text scores 2.14:1 on white and 9.81:1 on black.
Best tinted ink on it, if plain black or white feels flat: #12266E at 6.42:1.

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
#4A6BE1 · 4.69:1
AA on white−19% L
#4A6BE1
The quick fox
#2249D1 · 7.14:1
AAA on white−30% L
#2249D1
The quick fox
#9dafef · 9.81:1
AA on blackalready passes
#9dafef
The quick fox
#9dafef · 9.81:1
AAA on blackalready passes
#9dafef

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #758FE9 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
#9dafef on white: 2.14:1
AA ✗ fail · AA-large · AAA
Aa
#9dafef on black: 9.81:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #9dafef as text on that neutral, and that neutral as text on #9dafef.

NeutralRatioBoth directions
White2.14:1AaAa
Slate 502.05:1AaAa
Slate 1001.95:1AaAa
Slate 2001.74:1AaAa
Slate 3001.44:1AaAa
Slate 4001.20:1AaAa
Slate 5002.22:1AaAa
Slate 6003.54:1AaAa
Slate 7004.84:1AaAa
Slate 8006.84:1AaAa
Slate 9008.34:1AaAa
Black9.81:1AaAa
Colour vision deficiency
true color
protanopia · #9BB5F2
deuteranopia · #94AEED
tritanopia · #85BCC5

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. #9dafef is pinned to step 300; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F3F5FC
#E7EBF8
#C9D2F3
#9dafef
#6E89E7
#3E62DF
#2249D2
#1D3DAF
#17318C
#152766
#0D1840
Base = 300Lightest = 50 · #F3F5FCDarkest = 950 · #0D1840Text step on white = 500
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 0.024 271.9);
  --brand-100: oklch(0.94 0.038 271.9);
  --brand-200: oklch(0.88 0.057 271.9);
  --brand-300: oklch(0.80 0.074 271.9);
  --brand-400: oklch(0.72 0.087 271.9);
  --brand-500: oklch(0.64 0.094 271.9);
  --brand-600: oklch(0.56 0.094 271.9);
  --brand-700: oklch(0.48 0.089 271.9);
  --brand-800: oklch(0.40 0.079 271.9);
  --brand-900: oklch(0.32 0.066 271.9);
  --brand-950: oklch(0.24 0.052 271.9);
}

Colors that work with #9dafef

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#F4F6FA
Tinted page background
Border#C0CAED
Hairlines and dividers
Muted text#4B5C9B
Captions on the surface
Accent#B36A19
Second voice, not a rival
Dark variant#12266E
Hover, pressed, headers
Light variant#E9EDFB
Selected rows, tints
Dark surface#141724
Dark-mode background
Hover#7E96EA
One step down in lightness
Pressed#5F7DE5
Two steps down
Disabled#F3F4F7
Chroma pulled out
Focus ring#AABBF7
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 #9dafef

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

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Card and section backgrounds
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • White text placed on it
  • 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 #12266E
Safe as a 1px border on white
No — use #758FE9

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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. The lightness keeps it airy and approachable.

Worth knowing

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

Reads as
  • FormalityMedium
  • EnergyMedium-high
  • Weight22/100
  • 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#EFDD9D
Analogous left#9DD8EF
Analogous right#B49DEF
Split-complement 1#EFB49D
Split-complement 2#D8EF9D
Triadic 1#EF9DAF
Triadic 2#AFEF9D
Tetradic#EF9DD8
On the wheel
Base+30°−30°+120°+240°+180°227°

#9dafef sits at 227°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red61.6%
Green68.6%
Blue93.7%
R · 0–255
157
0x9d
G · 0–255
175
0xaf
B · 0–255
239
0xef

CMYK percentages

Cyan34.3%
Magenta26.8%
Yellow0.0%
Key (black)6.3%

Total ink coverage is 67%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#9dafef text on a black background

contrast 9.81:1

Card sample

#9dafef text on a white background

contrast 2.14:1

Card sample

#9dafef on grey

1.95:1

#9dafef on its own surface

1.98:1

#9dafef on its dark surface

8.33:1

CSS3 live lab

Text font color

The quick brown fox

color: #9dafef;
Background color
Panel with #9dafef background
background-color: #9dafef;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #9dafef;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(157, 175, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(157, 175, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #9dafef;
background: linear-gradient(135deg, #9dafef, #C19DEF);
Gradient text

Gradient headline

background: linear-gradient(90deg, #9dafef, #D69DEF);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #9dafef;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #9dafef;
caret-color: #9dafef;
Left rule
Pull quote or callout
border-left: 4px solid #9dafef;
Ring + tint
Selected chip
background: #E9EDFB;
box-shadow: inset 0 0 0 2px #9dafef;
Conic badge
68%
background: conic-gradient(#9dafef 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #9dafef 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(157, 175, 239, 0.5)
rgb(157 175 239 / 50%)
#9dafef80
hsl(227 72% 78% / 50%)
color-mix(in srgb, #9dafef 50%, transparent)
Alpha8-digit hexFlat on white
10%#9dafef1a#F5F7FD
20%#9dafef33#EBEFFC
40%#9dafef66#D8DFF9
60%#9dafef99#C4CFF5
80%#9dafefcc#B1BFF2

Gradients from #9dafef

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, #D1DAF8, #9dafef 45%, #12266E);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #9dafef, #BA83EB);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #9dafef, #EFDD9D);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #ECEFFC 0%, #9dafef 45%, #12266E 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4F6FA, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #C9EDF6 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #CDB7F3 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #12266E 0%, transparent 65%), #9dafef;

Monochromatic scale

Palettes built from #9dafef

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.

#9dafef 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
SurfacesBadgesHighlightsEmpty states
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 9.81:1.

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.

#9dafef, answered

What color is #9dafef?

#9dafef is a light vivid blue, closest to Light Steel Blue (ΔE2000 8.7). It sits at 227° on the hue wheel with 72% saturation and 78% lightness, which reads as cool.

What is the RGB value of #9dafef?

rgb(157, 175, 239) — 157 red, 175 green and 239 blue out of 255, or 61.6% / 68.6% / 93.7% by channel.

What is #9dafef in HSL and HSV?

hsl(227, 72%, 78%) and hsv(227, 34%, 94%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #9dafef a light or a dark color?

It is a mid-tone. Relative luminance is 0.4406 and perceived brightness is 70%, so black text on it reaches 9.81:1.

Should I use black or white text on #9dafef?

Black. It scores 9.81:1 against #9dafef, versus 2.14:1 for white — AAA at any size.

Is #9dafef accessible on a white background?

#9dafef on white scores 2.14:1, which fails WCAG AA at every size. Darken it to #4A6BE1 to reach 4.5:1, or #2249D1 for 7:1.

What is the complementary color of #9dafef?

#EFDD9D sits directly opposite on the wheel. Softer options are the split-complements #EFB49D and #D8EF9D, which give the same contrast with far less vibration.

What colors go well with #9dafef?

For interface work: #F4F6FA as the surface, #C0CAED for borders, #4B5C9B for secondary text, #B36A19 as an accent and #12266E for hover and pressed states. For a palette, the analogous pair #9DD8EF and #B49DEF stays calm, while #EFDD9D is the loudest partner.

What is #9dafef in CMYK for printing?

cmyk(34%, 27%, 0%, 6%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #9dafef warm or cool?

Cool — it scores 91 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #A99DEF; nudged cooler, #9CBDF0.

Which Tailwind color is closest to #9dafef?

The blue family — its 500 step is #3b82f6, ΔE2000 16.6 away. That is a visible difference, so define #9dafef as a custom token rather than reaching for the built-in.

How do I use #9dafef in Tailwind CSS?

Inline it as an arbitrary value with bg-[#9dafef] or text-[#9dafef], 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 #9dafef with 50% opacity?

rgba(157, 175, 239, 0.5), or #9dafef80 in eight-digit hex. Over white that composites to #CED7F7; over black, #4F5878.

Is #9dafef a web-safe color?

No. The nearest web-safe colour is #9999FF, ΔE2000 7 away. The palette only matters for legacy displays and some email clients now.

What does the color #9dafef 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 #9dafef?

The safest is same-hue elevation: linear-gradient(135deg, #D1DAF8, #9dafef 45%, #12266E). For more colour, a short hue run to #BA83EB keeps it rich without turning muddy.

Work with #9dafef in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #9dafef at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.