#4272BB#4272BB

#4272BB is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.4% C 0.126 H 258.6°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#4272BB
RGB	rgb(66, 114, 187)
HSL	hsl(216, 48%, 50%)
HSV	hsv(216, 65%, 73%)
CMYK	cmyk(64.7%, 39%, 0%, 26.7%)
CIE-LAB	lab(47.98, 7.20, -43.30)
CIE-LCH	lch(47.98, 43.90, 279.44°)
OKLab	oklab(55.36% -0.0249 -0.1231)
OKLCH	oklch(55.36% 0.126 258.6)
XYZ	xyz(17.2305, 16.7791, 49.3347)
Luminance	0.1678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4272BB #BB8B42

analogous

#42AFBB #4272BB #4E42BB

triadic

#4272BB #BB4272 #72BB42

tetradic

#4272BB #BB42AF #BB8B42 #42BB4E

square

#4272BB #BB42AF #BB8B42 #42BB4E

split-complementary

#4272BB #BB4E42 #AFBB42

monochromatic

#223B61 #32568E #4272BB #6E93CC #9CB5DC

Accessibility & contrast

On white

4.82

#4272BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#4272BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4272BB

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4272BB	#FFFFFF	#000000	##FFFFFF
##4272BB	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5278BE

Deuteranopia (green-blind)

#406DB9

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4272bb;
/* rgb */ color: rgb(66, 114, 187);
/* oklch */ color: oklch(55.4% 0.126 258.6);

Tailwind

colors: {
  custom: {
    50: '#829ad0',
    500: '#4272bb',
    950: '#000000',
  },
}

SCSS

$custom: #4272bb;
$custom-light: #829ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4272bb",
  "rgb": {
    "r": 66,
    "g": 114,
    "b": 187
  },
  "hsl": {
    "h": 216.198,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55356,
    "c": 0.12565,
    "h": 258.6
  },
  "luminance": 0.16781
}

Semantic roles & 50–950 ramp

primary

#4272BB

secondary

#C8B291

accent

#A250D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4272BB

Body copy rendered with the generated semantic roles for this colour.

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