#2581D4#2581D4

#2581D4 is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.3% C 0.152 H 250.5°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#2581D4
RGB	rgb(37, 129, 212)
HSL	hsl(208, 70%, 49%)
HSV	hsv(208, 83%, 83%)
CMYK	cmyk(82.5%, 39.2%, 0%, 16.9%)
CIE-LAB	lab(52.78, 3.35, -50.01)
CIE-LCH	lch(52.78, 50.12, 273.84°)
OKLab	oklab(59.29% -0.0506 -0.1429)
OKLCH	oklch(59.29% 0.152 250.5)
XYZ	xyz(20.4923, 20.8447, 65.2180)
Luminance	0.2085 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2581D4 #D47825

analogous

#25D4D0 #2581D4 #252AD4

triadic

#2581D4 #D42581 #81D425

tetradic

#2581D4 #D025D4 #D47825 #2AD425

square

#2581D4 #D025D4 #D47825 #2AD425

split-complementary

#2581D4 #D4252A #D4D025

monochromatic

#13426C #1C61A0 #2581D4 #559FE1 #89BCEA

Accessibility & contrast

On white

4.06

#2581D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#2581D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2581D4

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2581D4	#FFFFFF	#000000	##000000
##2581D4	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5986D7

Deuteranopia (green-blind)

#3C77D2

Tritanopia (blue-blind)

#0095A0

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #2581d4;
/* rgb */ color: rgb(37, 129, 212);
/* oklch */ color: oklch(59.3% 0.152 250.5);

Tailwind

colors: {
  custom: {
    50: '#7da5e2',
    500: '#2581d4',
    950: '#000000',
  },
}

SCSS

$custom: #2581d4;
$custom-light: #7da5e2;
$custom-dark: #000000;

JSON

{
  "hex": "#2581d4",
  "rgb": {
    "r": 37,
    "g": 129,
    "b": 212
  },
  "hsl": {
    "h": 208.457,
    "s": 70.281,
    "l": 48.824
  },
  "oklch": {
    "l": 0.59291,
    "c": 0.1516,
    "h": 250.5
  },
  "luminance": 0.20847
}

Semantic roles & 50–950 ramp

primary

#2581D4

secondary

#D4A881

accent

#8F3BED

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0B0F15

muted

#7C7F83

Preview Lab

Preview with #2581D4

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

Preview Lab → · Contrast checker → · Palette generator →