#255181#255181

#255181 is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.8% C 0.094 H 252.6°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#255181
RGB	rgb(37, 81, 129)
HSL	hsl(211, 55%, 33%)
HSV	hsv(211, 71%, 51%)
CMYK	cmyk(71.3%, 37.2%, 0%, 49.4%)
CIE-LAB	lab(33.69, 1.83, -31.46)
CIE-LCH	lch(33.69, 31.52, 273.33°)
OKLab	oklab(42.84% -0.0281 -0.0894)
OKLCH	oklch(42.84% 0.094 252.6)
XYZ	xyz(7.6664, 7.8623, 21.8782)
Luminance	0.0786 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255181 #815525

analogous

#257F81 #255181 #272581

triadic

#255181 #812551 #518125

tetradic

#255181 #81257F #815525 #258127

square

#255181 #81257F #815525 #258127

split-complementary

#255181 #812725 #7F8125

monochromatic

#0A1522 #173351 #255181 #336FB1 #538ECE

Accessibility & contrast

On white

8.16

#255181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#255181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255181

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255181	#FFFFFF	#000000	##FFFFFF
##255181	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5483

Deuteranopia (green-blind)

#2E4B80

Tritanopia (blue-blind)

#005C63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #255181;
/* rgb */ color: rgb(37, 81, 129);
/* oklch */ color: oklch(42.8% 0.094 252.6);

Tailwind

colors: {
  custom: {
    50: '#6b81a6',
    500: '#255181',
    950: '#000000',
  },
}

SCSS

$custom: #255181;
$custom-light: #6b81a6;
$custom-dark: #000000;

JSON

{
  "hex": "#255181",
  "rgb": {
    "r": 37,
    "g": 81,
    "b": 129
  },
  "hsl": {
    "h": 211.304,
    "s": 55.422,
    "l": 32.549
  },
  "oklch": {
    "l": 0.42842,
    "c": 0.09369,
    "h": 252.6
  },
  "luminance": 0.07863
}

Semantic roles & 50–950 ramp

primary

#255181

secondary

#B28350

accent

#9749DF

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #255181

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

Preview Lab → · Contrast checker → · Palette generator →