#255B81#255B81

#255B81 is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.3% C 0.084 H 242.6°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#255B81
RGB	rgb(37, 91, 129)
HSL	hsl(205, 55%, 33%)
HSV	hsv(205, 71%, 51%)
CMYK	cmyk(71.3%, 29.5%, 0%, 49.4%)
CIE-LAB	lab(36.85, -4.53, -26.49)
CIE-LCH	lch(36.85, 26.87, 260.29°)
OKLab	oklab(45.33% -0.0388 -0.0748)
OKLCH	oklch(45.33% 0.084 242.6)
XYZ	xyz(8.4650, 9.4596, 22.1444)
Luminance	0.0946 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255B81 #814B25

analogous

#258179 #255B81 #252D81

triadic

#255B81 #81255B #5B8125

tetradic

#255B81 #792581 #814B25 #2D8125

square

#255B81 #792581 #814B25 #2D8125

split-complementary

#255B81 #81252D #817925

monochromatic

#0A1822 #173951 #255B81 #337DB1 #539BCE

Accessibility & contrast

On white

7.26

#255B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#255B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255B81

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255B81	#FFFFFF	#000000	##FFFFFF
##255B81	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A5C83

Deuteranopia (green-blind)

#3D5380

Tritanopia (blue-blind)

#006468

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #255b81;
/* rgb */ color: rgb(37, 91, 129);
/* oklch */ color: oklch(45.3% 0.084 242.6);

Tailwind

colors: {
  custom: {
    50: '#6b89a5',
    500: '#255b81',
    950: '#000000',
  },
}

SCSS

$custom: #255b81;
$custom-light: #6b89a5;
$custom-dark: #000000;

JSON

{
  "hex": "#255b81",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 129
  },
  "hsl": {
    "h": 204.783,
    "s": 55.422,
    "l": 32.549
  },
  "oklch": {
    "l": 0.45328,
    "c": 0.08424,
    "h": 242.6
  },
  "luminance": 0.0946
}

Semantic roles & 50–950 ramp

primary

#255B81

secondary

#B27850

accent

#8749DF

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #255B81

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

Preview Lab → · Contrast checker → · Palette generator →