#255A8A#255A8A

#255A8A is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.6% C 0.097 H 248.8°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#255A8A
RGB	rgb(37, 90, 138)
HSL	hsl(209, 58%, 34%)
HSV	hsv(209, 73%, 54%)
CMYK	cmyk(73.2%, 34.8%, 0%, 45.9%)
CIE-LAB	lab(37.00, -0.52, -31.74)
CIE-LCH	lch(37.00, 31.75, 269.05°)
OKLab	oklab(45.6% -0.0349 -0.0901)
OKLCH	oklch(45.6% 0.097 248.8)
XYZ	xyz(9.0048, 9.5396, 25.4066)
Luminance	0.0954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255A8A #8A5525

analogous

#258A88 #255A8A #25288A

triadic

#255A8A #8A255A #5A8A25

tetradic

#255A8A #88258A #8A5525 #288A25

square

#255A8A #88258A #8A5525 #288A25

split-complementary

#255A8A #8A2528 #8A8825

monochromatic

#0B1B29 #183B5A #255A8A #3279BA #5798D2

Accessibility & contrast

On white

7.22

#255A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#255A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255A8A

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255A8A	#FFFFFF	#000000	##FFFFFF
##255A8A	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445C8C

Deuteranopia (green-blind)

#365389

Tritanopia (blue-blind)

#00656B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #255a8a;
/* rgb */ color: rgb(37, 90, 138);
/* oklch */ color: oklch(45.6% 0.097 248.8);

Tailwind

colors: {
  custom: {
    50: '#6d88ac',
    500: '#255a8a',
    950: '#000000',
  },
}

SCSS

$custom: #255a8a;
$custom-light: #6d88ac;
$custom-dark: #000000;

JSON

{
  "hex": "#255a8a",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 138
  },
  "hsl": {
    "h": 208.515,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.45598,
    "c": 0.09659,
    "h": 248.8
  },
  "luminance": 0.09541
}

Semantic roles & 50–950 ramp

primary

#255A8A

secondary

#B78354

accent

#9047E1

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#080B10

muted

#7B7C7F

Preview Lab

Preview with #255A8A

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

Preview Lab → · Contrast checker → · Palette generator →