#2581BD#2581BD

#2581BD is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 57.9% C 0.124 H 242.7°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#2581BD
RGB	rgb(37, 129, 189)
HSL	hsl(204, 67%, 44%)
HSV	hsv(204, 80%, 74%)
CMYK	cmyk(80.4%, 31.7%, 0%, 25.9%)
CIE-LAB	lab(51.57, -5.22, -38.83)
CIE-LCH	lch(51.57, 39.18, 262.35°)
OKLab	oklab(57.95% -0.0568 -0.1102)
OKLCH	oklch(57.95% 0.124 242.7)
XYZ	xyz(17.7949, 19.7658, 51.0115)
Luminance	0.1977 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2581BD #BD6125

analogous

#25BDAD #2581BD #2535BD

triadic

#2581BD #BD2581 #81BD25

tetradic

#2581BD #AD25BD #BD6125 #35BD25

square

#2581BD #AD25BD #BD6125 #35BD25

split-complementary

#2581BD #BD2535 #BDAD25

monochromatic

#113B57 #1B5E8A #2581BD #459FDB #78BAE5

Accessibility & contrast

On white

4.24

#2581BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#2581BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2581BD

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2581BD	#FFFFFF	#000000	##000000
##2581BD	1.00	4.24	4.95	4.95
#FFFFFF	4.24	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)

#6583C0

Deuteranopia (green-blind)

#5075BC

Tritanopia (blue-blind)

#009096

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #2581bd;
/* rgb */ color: rgb(37, 129, 189);
/* oklch */ color: oklch(57.9% 0.124 242.7);

Tailwind

colors: {
  custom: {
    50: '#78a5d1',
    500: '#2581bd',
    950: '#000000',
  },
}

SCSS

$custom: #2581bd;
$custom-light: #78a5d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2581bd",
  "rgb": {
    "r": 37,
    "g": 129,
    "b": 189
  },
  "hsl": {
    "h": 203.684,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.57946,
    "c": 0.12401,
    "h": 242.7
  },
  "luminance": 0.19768
}

Semantic roles & 50–950 ramp

primary

#2581BD

secondary

#CC9572

accent

#823EEA

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #2581BD

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

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