#2581A4#2581A4

#2581A4 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 56.7% C 0.098 H 228.4°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#2581A4
RGB	rgb(37, 129, 164)
HSL	hsl(197, 63%, 39%)
HSV	hsv(197, 77%, 64%)
CMYK	cmyk(77.4%, 21.3%, 0%, 35.7%)
CIE-LAB	lab(50.42, -14.23, -26.21)
CIE-LCH	lch(50.42, 29.83, 241.49°)
OKLab	oklab(56.65% -0.0654 -0.0736)
OKLCH	oklch(56.65% 0.098 228.4)
XYZ	xyz(15.3113, 18.7723, 37.9312)
Luminance	0.1877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2581A4 #A44825

analogous

#25A487 #2581A4 #2542A4

triadic

#2581A4 #A42581 #81A425

tetradic

#2581A4 #8725A4 #A44825 #42A425

square

#2581A4 #8725A4 #A44825 #42A425

split-complementary

#2581A4 #A42542 #A48725

monochromatic

#0E3240 #1A5A72 #2581A4 #35A6D1 #67BCDD

Accessibility & contrast

On white

4.42

#2581A4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#2581A4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2581A4

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2581A4	#FFFFFF	#000000	##000000
##2581A4	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7FA6

Deuteranopia (green-blind)

#5E73A4

Tritanopia (blue-blind)

#008B8D

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #2581a4;
/* rgb */ color: rgb(37, 129, 164);
/* oklch */ color: oklch(56.7% 0.098 228.4);

Tailwind

colors: {
  custom: {
    50: '#73a5bf',
    500: '#2581a4',
    950: '#000000',
  },
}

SCSS

$custom: #2581a4;
$custom-light: #73a5bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2581a4",
  "rgb": {
    "r": 37,
    "g": 129,
    "b": 164
  },
  "hsl": {
    "h": 196.535,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.56652,
    "c": 0.09847,
    "h": 228.4
  },
  "luminance": 0.18774
}

Semantic roles & 50–950 ramp

primary

#2581A4

secondary

#C27D62

accent

#6F42E6

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2581A4

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

Preview Lab → · Contrast checker → · Palette generator →