#2581BC#2581BC

#2581BC is a mid, vivid cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.123 H 242.3°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#2581BC
RGB	rgb(37, 129, 188)
HSL	hsl(203, 67%, 44%)
HSV	hsv(203, 80%, 74%)
CMYK	cmyk(80.3%, 31.4%, 0%, 26.3%)
CIE-LAB	lab(51.52, -5.59, -38.34)
CIE-LCH	lch(51.52, 38.74, 261.71°)
OKLab	oklab(57.89% -0.0572 -0.1088)
OKLCH	oklch(57.89% 0.123 242.3)
XYZ	xyz(17.6867, 19.7225, 50.4419)
Luminance	0.1973 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2581BC #BC6025

analogous

#25BCAC #2581BC #2535BC

triadic

#2581BC #BC2581 #81BC25

tetradic

#2581BC #AC25BC #BC6025 #35BC25

square

#2581BC #AC25BC #BC6025 #35BC25

split-complementary

#2581BC #BC2535 #BCAC25

monochromatic

#113B56 #1B5E89 #2581BC #44A0DA #77BAE4

Accessibility & contrast

On white

4.25

#2581BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#2581BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2581BC

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2581BC	#FFFFFF	#000000	##000000
##2581BC	1.00	4.25	4.95	4.95
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BF

Deuteranopia (green-blind)

#5075BB

Tritanopia (blue-blind)

#009096

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #2581bc;
/* rgb */ color: rgb(37, 129, 188);
/* oklch */ color: oklch(57.9% 0.123 242.3);

Tailwind

colors: {
  custom: {
    50: '#78a5d0',
    500: '#2581bc',
    950: '#000000',
  },
}

SCSS

$custom: #2581bc;
$custom-light: #78a5d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2581bc",
  "rgb": {
    "r": 37,
    "g": 129,
    "b": 188
  },
  "hsl": {
    "h": 203.444,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.57891,
    "c": 0.12287,
    "h": 242.3
  },
  "luminance": 0.19725
}

Semantic roles & 50–950 ramp

primary

#2581BC

secondary

#CC9471

accent

#813EEA

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #2581BC

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

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