#2566A4#2566A4

#2566A4 is a mid, moderate cyan. Relative luminance 0.126; OKLCH L 50.1% C 0.119 H 250.6°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#2566A4
RGB	rgb(37, 102, 164)
HSL	hsl(209, 63%, 39%)
HSV	hsv(209, 77%, 64%)
CMYK	cmyk(77.4%, 37.8%, 0%, 35.7%)
CIE-LAB	lab(42.12, 1.81, -39.24)
CIE-LCH	lch(42.12, 39.28, 272.64°)
OKLab	oklab(50.07% -0.0393 -0.1118)
OKLCH	oklch(50.07% 0.119 250.6)
XYZ	xyz(12.2126, 12.5750, 36.8983)
Luminance	0.1258 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2566A4 #A46325

analogous

#25A4A3 #2566A4 #2527A4

triadic

#2566A4 #A42566 #66A425

tetradic

#2566A4 #A325A4 #A46325 #27A425

square

#2566A4 #A325A4 #A46325 #27A425

split-complementary

#2566A4 #A42527 #A4A325

monochromatic

#0E2840 #1A4772 #2566A4 #3585D1 #67A3DD

Accessibility & contrast

On white

5.97

#2566A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#2566A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2566A4

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2566A4	#FFFFFF	#000000	##FFFFFF
##2566A4	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#496AA7

Deuteranopia (green-blind)

#365EA3

Tritanopia (blue-blind)

#00757D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #2566a4;
/* rgb */ color: rgb(37, 102, 164);
/* oklch */ color: oklch(50.1% 0.119 250.6);

Tailwind

colors: {
  custom: {
    50: '#7291bf',
    500: '#2566a4',
    950: '#000000',
  },
}

SCSS

$custom: #2566a4;
$custom-light: #7291bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2566a4",
  "rgb": {
    "r": 37,
    "g": 102,
    "b": 164
  },
  "hsl": {
    "h": 209.291,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50073,
    "c": 0.11853,
    "h": 250.6
  },
  "luminance": 0.12576
}

Semantic roles & 50–950 ramp

primary

#2566A4

secondary

#C29162

accent

#9242E6

background

#F7F8FB

surface

#EDF0F7

border

#C8CBD0

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #2566A4

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

Preview Lab → · Contrast checker → · Palette generator →