#255A7D#255A7D

#255A7D is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.9% C 0.080 H 240.8°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#255A7D
RGB	rgb(37, 90, 125)
HSL	hsl(204, 54%, 32%)
HSV	hsv(204, 70%, 49%)
CMYK	cmyk(70.4%, 28%, 0%, 51%)
CIE-LAB	lab(36.34, -5.39, -24.84)
CIE-LCH	lch(36.34, 25.42, 257.76°)
OKLab	oklab(44.86% -0.0391 -0.07)
OKLCH	oklch(44.86% 0.08 240.8)
XYZ	xyz(8.1194, 9.1854, 20.7431)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255A7D #7D4825

analogous

#257D74 #255A7D #252E7D

triadic

#255A7D #7D255A #5A7D25

tetradic

#255A7D #74257D #7D4825 #2E7D25

square

#255A7D #74257D #7D4825 #2E7D25

split-complementary

#255A7D #7D252E #7D7425

monochromatic

#09161F #17384E #255A7D #337CAC #519BCB

Accessibility & contrast

On white

7.40

#255A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#255A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255A7D

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255A7D	#FFFFFF	#000000	##FFFFFF
##255A7D	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A5A7F

Deuteranopia (green-blind)

#3E527C

Tritanopia (blue-blind)

#006366

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #255a7d;
/* rgb */ color: rgb(37, 90, 125);
/* oklch */ color: oklch(44.9% 0.080 240.8);

Tailwind

colors: {
  custom: {
    50: '#6b88a3',
    500: '#255a7d',
    950: '#000000',
  },
}

SCSS

$custom: #255a7d;
$custom-light: #6b88a3;
$custom-dark: #000000;

JSON

{
  "hex": "#255a7d",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 125
  },
  "hsl": {
    "h": 203.864,
    "s": 54.321,
    "l": 31.765
  },
  "oklch": {
    "l": 0.44856,
    "c": 0.08018,
    "h": 240.8
  },
  "luminance": 0.09186
}

Semantic roles & 50–950 ramp

primary

#255A7D

secondary

#AF754F

accent

#854ADE

background

#F6F8FA

surface

#ECEFF3

border

#C7CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #255A7D

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

Preview Lab → · Contrast checker → · Palette generator →