#4279BC#4279BC

#4279BC is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 57.0% C 0.119 H 254.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#4279BC
RGB	rgb(66, 121, 188)
HSL	hsl(213, 48%, 50%)
HSV	hsv(213, 65%, 74%)
CMYK	cmyk(64.9%, 35.6%, 0%, 26.3%)
CIE-LAB	lab(50.05, 3.26, -40.60)
CIE-LCH	lch(50.05, 40.73, 274.60°)
OKLab	oklab(56.99% -0.0319 -0.1151)
OKLCH	oklch(56.99% 0.119 254.5)
XYZ	xyz(18.1579, 18.4621, 50.1738)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279BC #BC8542

analogous

#42B6BC #4279BC #4842BC

triadic

#4279BC #BC4279 #79BC42

tetradic

#4279BC #BC42B6 #BC8542 #42BC48

square

#4279BC #BC42B6 #BC8542 #42BC48

split-complementary

#4279BC #BC4842 #B6BC42

monochromatic

#223F61 #325C8F #4279BC #6F99CC #9CB9DC

Accessibility & contrast

On white

4.47

#4279BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#4279BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279BC

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279BC	#FFFFFF	#000000	##000000
##4279BC	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7DBF

Deuteranopia (green-blind)

#4B72BB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4279bc;
/* rgb */ color: rgb(66, 121, 188);
/* oklch */ color: oklch(57.0% 0.119 254.5);

Tailwind

colors: {
  custom: {
    50: '#829fd0',
    500: '#4279bc',
    950: '#000000',
  },
}

SCSS

$custom: #4279bc;
$custom-light: #829fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4279bc",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 188
  },
  "hsl": {
    "h": 212.951,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56986,
    "c": 0.11949,
    "h": 254.5
  },
  "luminance": 0.18464
}

Semantic roles & 50–950 ramp

primary

#4279BC

secondary

#C9B091

accent

#9B50D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4279BC

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

Preview Lab → · Contrast checker → · Palette generator →