#4279BD#4279BD

#4279BD is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.0% C 0.121 H 254.8°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#4279BD
RGB	rgb(66, 121, 189)
HSL	hsl(213, 48%, 50%)
HSV	hsv(213, 65%, 74%)
CMYK	cmyk(65.1%, 36%, 0%, 25.9%)
CIE-LAB	lab(50.10, 3.61, -41.09)
CIE-LCH	lch(50.10, 41.25, 275.02°)
OKLab	oklab(57.04% -0.0317 -0.1166)
OKLCH	oklch(57.04% 0.121 254.8)
XYZ	xyz(18.2661, 18.5053, 50.7435)
Luminance	0.1851 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279BD #BD8642

analogous

#42B6BD #4279BD #4942BD

triadic

#4279BD #BD4279 #79BD42

tetradic

#4279BD #BD42B6 #BD8642 #42BD49

square

#4279BD #BD42B6 #BD8642 #42BD49

split-complementary

#4279BD #BD4942 #B6BD42

monochromatic

#223F62 #325C90 #4279BD #6F99CD #9DB9DD

Accessibility & contrast

On white

4.47

#4279BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#4279BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279BD

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279BD	#FFFFFF	#000000	##000000
##4279BD	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7EC0

Deuteranopia (green-blind)

#4A72BC

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4279bd;
/* rgb */ color: rgb(66, 121, 189);
/* oklch */ color: oklch(57.0% 0.121 254.8);

Tailwind

colors: {
  custom: {
    50: '#829fd1',
    500: '#4279bd',
    950: '#000000',
  },
}

SCSS

$custom: #4279bd;
$custom-light: #829fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#4279bd",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 189
  },
  "hsl": {
    "h": 213.171,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.57043,
    "c": 0.12081,
    "h": 254.8
  },
  "luminance": 0.18507
}

Semantic roles & 50–950 ramp

primary

#4279BD

secondary

#C9B092

accent

#9B50D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4279BD

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

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