#255A7B#255A7B

#255A7B is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.7% C 0.078 H 239.2°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#255A7B
RGB	rgb(37, 90, 123)
HSL	hsl(203, 54%, 31%)
HSV	hsv(203, 70%, 48%)
CMYK	cmyk(69.9%, 26.8%, 0%, 51.8%)
CIE-LAB	lab(36.24, -6.13, -23.76)
CIE-LCH	lch(36.24, 24.54, 255.54°)
OKLab	oklab(44.75% -0.0398 -0.0669)
OKLCH	oklch(44.75% 0.078 239.2)
XYZ	xyz(7.9929, 9.1349, 20.0770)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255A7B #7B4625

analogous

#257B71 #255A7B #252F7B

triadic

#255A7B #7B255A #5A7B25

tetradic

#255A7B #71257B #7B4625 #2F7B25

square

#255A7B #71257B #7B4625 #2F7B25

split-complementary

#255A7B #7B252F #7B7125

monochromatic

#09151D #17384C #255A7B #337CAA #509BCA

Accessibility & contrast

On white

7.43

#255A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#255A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255A7B

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255A7B	#FFFFFF	#000000	##FFFFFF
##255A7B	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5A7D

Deuteranopia (green-blind)

#3F527A

Tritanopia (blue-blind)

#006265

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #255a7b;
/* rgb */ color: rgb(37, 90, 123);
/* oklch */ color: oklch(44.7% 0.078 239.2);

Tailwind

colors: {
  custom: {
    50: '#6a88a1',
    500: '#255a7b',
    950: '#000000',
  },
}

SCSS

$custom: #255a7b;
$custom-light: #6a88a1;
$custom-dark: #000000;

JSON

{
  "hex": "#255a7b",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 123
  },
  "hsl": {
    "h": 203.023,
    "s": 53.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.44748,
    "c": 0.07783,
    "h": 239.2
  },
  "luminance": 0.09136
}

Semantic roles & 50–950 ramp

primary

#255A7B

secondary

#AD734F

accent

#834BDD

background

#F6F8F9

surface

#ECEFF2

border

#C7CACC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #255A7B

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

Preview Lab → · Contrast checker → · Palette generator →