#2579A4#2579A4

#2579A4 is a mid, moderate cyan. Relative luminance 0.167; OKLCH L 54.7% C 0.102 H 235.9°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#2579A4
RGB	rgb(37, 121, 164)
HSL	hsl(200, 63%, 39%)
HSV	hsv(200, 77%, 64%)
CMYK	cmyk(77.4%, 26.2%, 0%, 35.7%)
CIE-LAB	lab(47.94, -9.68, -30.07)
CIE-LCH	lch(47.94, 31.59, 252.16°)
OKLab	oklab(54.67% -0.0575 -0.0848)
OKLCH	oklch(54.67% 0.102 235.9)
XYZ	xyz(14.2985, 16.7467, 37.5936)
Luminance	0.1675 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2579A4 #A45025

analogous

#25A490 #2579A4 #253AA4

triadic

#2579A4 #A42579 #79A425

tetradic

#2579A4 #9025A4 #A45025 #3AA425

square

#2579A4 #9025A4 #A45025 #3AA425

split-complementary

#2579A4 #A4253A #A49025

monochromatic

#0E2F40 #1A5472 #2579A4 #359CD1 #67B5DD

Accessibility & contrast

On white

4.83

#2579A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#2579A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2579A4

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2579A4	#FFFFFF	#000000	##FFFFFF
##2579A4	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6478A6

Deuteranopia (green-blind)

#536CA3

Tritanopia (blue-blind)

#008488

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #2579a4;
/* rgb */ color: rgb(37, 121, 164);
/* oklch */ color: oklch(54.7% 0.102 235.9);

Tailwind

colors: {
  custom: {
    50: '#739fbf',
    500: '#2579a4',
    950: '#000000',
  },
}

SCSS

$custom: #2579a4;
$custom-light: #739fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#2579a4",
  "rgb": {
    "r": 37,
    "g": 121,
    "b": 164
  },
  "hsl": {
    "h": 200.315,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.54673,
    "c": 0.10248,
    "h": 235.9
  },
  "luminance": 0.16748
}

Semantic roles & 50–950 ramp

primary

#2579A4

secondary

#C28362

accent

#7942E6

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2579A4

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

Preview Lab → · Contrast checker → · Palette generator →