#4279BF#4279BF

#4279BF is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.2% C 0.123 H 255.4°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#4279BF
RGB	rgb(66, 121, 191)
HSL	hsl(214, 49%, 50%)
HSV	hsv(214, 65%, 75%)
CMYK	cmyk(65.4%, 36.6%, 0%, 25.1%)
CIE-LAB	lab(50.21, 4.31, -42.07)
CIE-LCH	lch(50.21, 42.29, 275.85°)
OKLab	oklab(57.16% -0.0311 -0.1195)
OKLCH	oklch(57.16% 0.123 255.4)
XYZ	xyz(18.4847, 18.5928, 51.8947)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4279BF #BF8842

analogous

#42B7BF #4279BF #4942BF

triadic

#4279BF #BF4279 #79BF42

tetradic

#4279BF #BF42B7 #BF8842 #42BF49

square

#4279BF #BF42B7 #BF8842 #42BF49

split-complementary

#4279BF #BF4942 #B7BF42

monochromatic

#223F65 #325C92 #4279BF #7099CE #9DBADE

Accessibility & contrast

On white

4.45

#4279BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#4279BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279BF

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4279BF	#FFFFFF	#000000	##000000
##4279BF	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7EC2

Deuteranopia (green-blind)

#4972BE

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4279bf;
/* rgb */ color: rgb(66, 121, 191);
/* oklch */ color: oklch(57.2% 0.123 255.4);

Tailwind

colors: {
  custom: {
    50: '#839fd2',
    500: '#4279bf',
    950: '#000000',
  },
}

SCSS

$custom: #4279bf;
$custom-light: #839fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#4279bf",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 191
  },
  "hsl": {
    "h": 213.6,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.57159,
    "c": 0.12346,
    "h": 255.4
  },
  "luminance": 0.18595
}

Semantic roles & 50–950 ramp

primary

#4279BF

secondary

#CAB293

accent

#9C4FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4279BF

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

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