#255F9B#255F9B

#255F9B is a mid, moderate cyan. Relative luminance 0.109; OKLCH L 47.8% C 0.114 H 252.1°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#255F9B
RGB	rgb(37, 95, 155)
HSL	hsl(211, 61%, 38%)
HSV	hsv(211, 76%, 61%)
CMYK	cmyk(76.1%, 38.7%, 0%, 39.2%)
CIE-LAB	lab(39.48, 2.79, -38.06)
CIE-LCH	lch(39.48, 38.17, 274.19°)
OKLab	oklab(47.85% -0.0351 -0.1085)
OKLCH	oklch(47.85% 0.114 252.1)
XYZ	xyz(10.7693, 10.9431, 32.5486)
Luminance	0.1094 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255F9B #9B6125

analogous

#259A9B #255F9B #26259B

triadic

#255F9B #9B255F #5F9B25

tetradic

#255F9B #9B259A #9B6125 #259B26

square

#255F9B #9B259A #9B6125 #259B26

split-complementary

#255F9B #9B2625 #9A9B25

monochromatic

#0D2238 #19416A #255F9B #317DCC #619CD9

Accessibility & contrast

On white

6.59

#255F9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#255F9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255F9B

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255F9B	#FFFFFF	#000000	##FFFFFF
##255F9B	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43639D

Deuteranopia (green-blind)

#31589A

Tritanopia (blue-blind)

#006D75

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #255f9b;
/* rgb */ color: rgb(37, 95, 155);
/* oklch */ color: oklch(47.8% 0.114 252.1);

Tailwind

colors: {
  custom: {
    50: '#708cb9',
    500: '#255f9b',
    950: '#000000',
  },
}

SCSS

$custom: #255f9b;
$custom-light: #708cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#255f9b",
  "rgb": {
    "r": 37,
    "g": 95,
    "b": 155
  },
  "hsl": {
    "h": 210.508,
    "s": 61.458,
    "l": 37.647
  },
  "oklch": {
    "l": 0.47849,
    "c": 0.11403,
    "h": 252.1
  },
  "luminance": 0.10944
}

Semantic roles & 50–950 ramp

primary

#255F9B

secondary

#BF8F5D

accent

#9543E5

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C11

muted

#7B7D80

Preview Lab

Preview with #255F9B

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

Preview Lab → · Contrast checker → · Palette generator →