#255F8B#255F8B

#255F8B is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.9% C 0.093 H 244.8°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#255F8B
RGB	rgb(37, 95, 139)
HSL	hsl(206, 58%, 35%)
HSV	hsv(206, 73%, 55%)
CMYK	cmyk(73.4%, 31.7%, 0%, 45.5%)
CIE-LAB	lab(38.62, -3.29, -29.80)
CIE-LCH	lch(38.62, 29.98, 263.70°)
OKLab	oklab(46.89% -0.0397 -0.0843)
OKLCH	oklch(46.89% 0.093 244.8)
XYZ	xyz(9.5136, 10.4408, 25.9350)
Luminance	0.1044 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255F8B #8B5125

analogous

#258B84 #255F8B #252C8B

triadic

#255F8B #8B255F #5F8B25

tetradic

#255F8B #84258B #8B5125 #2C8B25

square

#255F8B #84258B #8B5125 #2C8B25

split-complementary

#255F8B #8B252C #8B8425

monochromatic

#0B1D2A #183E5B #255F8B #3280BB #589ED3

Accessibility & contrast

On white

6.80

#255F8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#255F8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255F8B

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255F8B	#FFFFFF	#000000	##FFFFFF
##255F8B	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B608D

Deuteranopia (green-blind)

#3D578A

Tritanopia (blue-blind)

#006A6F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #255f8b;
/* rgb */ color: rgb(37, 95, 139);
/* oklch */ color: oklch(46.9% 0.093 244.8);

Tailwind

colors: {
  custom: {
    50: '#6d8cad',
    500: '#255f8b',
    950: '#000000',
  },
}

SCSS

$custom: #255f8b;
$custom-light: #6d8cad;
$custom-dark: #000000;

JSON

{
  "hex": "#255f8b",
  "rgb": {
    "r": 37,
    "g": 95,
    "b": 139
  },
  "hsl": {
    "h": 205.882,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.4689,
    "c": 0.09324,
    "h": 244.8
  },
  "luminance": 0.10442
}

Semantic roles & 50–950 ramp

primary

#255F8B

secondary

#B77F55

accent

#8947E1

background

#F7F8FA

surface

#EDF0F4

border

#C8CBCE

text

#080C10

muted

#7B7D7F

Preview Lab

Preview with #255F8B

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

Preview Lab → · Contrast checker → · Palette generator →