#2579C4#2579C4

#2579C4 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.5% C 0.140 H 250.0°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#2579C4
RGB	rgb(37, 121, 196)
HSL	hsl(208, 68%, 46%)
HSV	hsv(208, 81%, 77%)
CMYK	cmyk(81.1%, 38.3%, 0%, 23.1%)
CIE-LAB	lab(49.56, 2.20, -46.03)
CIE-LCH	lch(49.56, 46.08, 272.73°)
OKLab	oklab(56.48% -0.0479 -0.1314)
OKLCH	oklch(56.48% 0.14 250)
XYZ	xyz(17.5603, 18.0514, 54.7726)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2579C4 #C47025

analogous

#25C4BF #2579C4 #2529C4

triadic

#2579C4 #C42579 #79C425

tetradic

#2579C4 #BF25C4 #C47025 #29C425

square

#2579C4 #BF25C4 #C47025 #29C425

split-complementary

#2579C4 #C42529 #C4BF25

monochromatic

#12395D #1B5991 #2579C4 #4997DD #7DB5E6

Accessibility & contrast

On white

4.55

#2579C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#2579C4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2579C4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2579C4	#FFFFFF	#000000	##000000
##2579C4	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#557EC7

Deuteranopia (green-blind)

#3C6FC3

Tritanopia (blue-blind)

#008B95

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #2579c4;
/* rgb */ color: rgb(37, 121, 196);
/* oklch */ color: oklch(56.5% 0.140 250.0);

Tailwind

colors: {
  custom: {
    50: '#799fd6',
    500: '#2579c4',
    950: '#000000',
  },
}

SCSS

$custom: #2579c4;
$custom-light: #799fd6;
$custom-dark: #000000;

JSON

{
  "hex": "#2579c4",
  "rgb": {
    "r": 37,
    "g": 121,
    "b": 196
  },
  "hsl": {
    "h": 208.302,
    "s": 68.24,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56481,
    "c": 0.13985,
    "h": 250
  },
  "luminance": 0.18054
}

Semantic roles & 50–950 ramp

primary

#2579C4

secondary

#CFA076

accent

#8F3DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #2579C4

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

Preview Lab → · Contrast checker → · Palette generator →