#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
RGBrgb(37, 129, 164)
HSLhsl(197, 63%, 39%)
HSVhsv(197, 77%, 64%)
CMYKcmyk(77.4%, 21.3%, 0%, 35.7%)
CIE-LABlab(50.42, -14.23, -26.21)
CIE-LCHlch(50.42, 29.83, 241.49°)
OKLaboklab(56.65% -0.0654 -0.0736)
OKLCHoklch(56.65% 0.098 228.4)
XYZxyz(15.3113, 18.7723, 37.9312)
Luminance0.1877 (WCAG relative)
Temperaturecool
Familycyan

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
##2581A41.004.424.754.75
#FFFFFF4.421.0021.0021.00
#0000004.7521.001.001.00
##0000004.7521.001.001.00

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 →

#2581A4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva