#2566AC#2566AC

#2566AC is a mid, vivid cyan. Relative luminance 0.129; OKLCH L 50.6% C 0.129 H 253.2°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#2566AC
RGB	rgb(37, 102, 172)
HSL	hsl(211, 65%, 41%)
HSV	hsv(211, 78%, 67%)
CMYK	cmyk(78.5%, 40.7%, 0%, 32.5%)
CIE-LAB	lab(42.57, 4.87, -43.23)
CIE-LCH	lch(42.57, 43.50, 276.43°)
OKLab	oklab(50.58% -0.0373 -0.1235)
OKLCH	oklch(50.58% 0.129 253.2)
XYZ	xyz(12.9579, 12.8731, 40.8235)
Luminance	0.1288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2566AC #AC6B25

analogous

#25A9AC #2566AC #2725AC

triadic

#2566AC #AC2566 #66AC25

tetradic

#2566AC #AC25A9 #AC6B25 #25AC27

square

#2566AC #AC25A9 #AC6B25 #25AC27

split-complementary

#2566AC #AC2725 #A9AC25

monochromatic

#0F2A47 #1A487A #2566AC #3A84D5 #6CA4DF

Accessibility & contrast

On white

5.87

#2566AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#2566AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2566AC

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2566AC	#FFFFFF	#000000	##FFFFFF
##2566AC	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446BAF

Deuteranopia (green-blind)

#2E5FAB

Tritanopia (blue-blind)

#007780

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #2566ac;
/* rgb */ color: rgb(37, 102, 172);
/* oklch */ color: oklch(50.6% 0.129 253.2);

Tailwind

colors: {
  custom: {
    50: '#7491c5',
    500: '#2566ac',
    950: '#000000',
  },
}

SCSS

$custom: #2566ac;
$custom-light: #7491c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2566ac",
  "rgb": {
    "r": 37,
    "g": 102,
    "b": 172
  },
  "hsl": {
    "h": 211.111,
    "s": 64.593,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50577,
    "c": 0.12905,
    "h": 253.2
  },
  "luminance": 0.12875
}

Semantic roles & 50–950 ramp

primary

#2566AC

secondary

#C69867

accent

#9740E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090C13

muted

#7B7D82

Preview Lab

Preview with #2566AC

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

Preview Lab → · Contrast checker → · Palette generator →