#255A8F#255A8F

#255A8F is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.9% C 0.103 H 251.1°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#255A8F
RGB	rgb(37, 90, 143)
HSL	hsl(210, 59%, 35%)
HSV	hsv(210, 74%, 56%)
CMYK	cmyk(74.1%, 37.1%, 0%, 43.9%)
CIE-LAB	lab(37.28, 1.38, -34.35)
CIE-LCH	lch(37.28, 34.37, 272.30°)
OKLab	oklab(45.9% -0.0334 -0.0977)
OKLCH	oklch(45.9% 0.103 251.1)
XYZ	xyz(9.3752, 9.6878, 27.3571)
Luminance	0.0969 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255A8F #8F5A25

analogous

#258F8F #255A8F #25258F

triadic

#255A8F #8F255A #5A8F25

tetradic

#255A8F #8F258F #8F5A25 #258F25

square

#255A8F #8F258F #8F5A25 #258F25

split-complementary

#255A8F #8F2525 #8F8F25

monochromatic

#0C1D2E #183B5E #255A8F #3279C0 #5A97D4

Accessibility & contrast

On white

7.15

#255A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#255A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255A8F

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255A8F	#FFFFFF	#000000	##FFFFFF
##255A8F	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425D91

Deuteranopia (green-blind)

#32538E

Tritanopia (blue-blind)

#00676D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #255a8f;
/* rgb */ color: rgb(37, 90, 143);
/* oklch */ color: oklch(45.9% 0.103 251.1);

Tailwind

colors: {
  custom: {
    50: '#6e88b0',
    500: '#255a8f',
    950: '#000000',
  },
}

SCSS

$custom: #255a8f;
$custom-light: #6e88b0;
$custom-dark: #000000;

JSON

{
  "hex": "#255a8f",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 143
  },
  "hsl": {
    "h": 210,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.45901,
    "c": 0.10325,
    "h": 251.1
  },
  "luminance": 0.09689
}

Semantic roles & 50–950 ramp

primary

#255A8F

secondary

#B98857

accent

#9446E2

background

#F7F8FA

surface

#EDEFF5

border

#C8CACF

text

#080B10

muted

#7B7C7F

Preview Lab

Preview with #255A8F

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

Preview Lab → · Contrast checker → · Palette generator →