#255E9F#255E9F

#255E9F is a mid, vivid cyan. Relative luminance 0.109; OKLCH L 47.9% C 0.121 H 254.0°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#255E9F
RGB	rgb(37, 94, 159)
HSL	hsl(212, 62%, 38%)
HSV	hsv(212, 77%, 62%)
CMYK	cmyk(76.7%, 40.9%, 0%, 37.6%)
CIE-LAB	lab(39.41, 4.97, -40.57)
CIE-LCH	lch(39.41, 40.87, 276.99°)
OKLab	oklab(47.87% -0.0332 -0.1159)
OKLCH	oklch(47.87% 0.121 254)
XYZ	xyz(11.0213, 10.9007, 34.3173)
Luminance	0.1090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255E9F #9F6625

analogous

#259B9F #255E9F #29259F

triadic

#255E9F #9F255E #5E9F25

tetradic

#255E9F #9F259B #9F6625 #259F29

square

#255E9F #9F259B #9F6625 #259F29

split-complementary

#255E9F #9F2925 #9B9F25

monochromatic

#0E233C #19416D #255E9F #327BCF #649BDB

Accessibility & contrast

On white

6.60

#255E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#255E9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255E9F

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255E9F	#FFFFFF	#000000	##FFFFFF
##255E9F	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F63A2

Deuteranopia (green-blind)

#2B589E

Tritanopia (blue-blind)

#006D77

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #255e9f;
/* rgb */ color: rgb(37, 94, 159);
/* oklch */ color: oklch(47.9% 0.121 254.0);

Tailwind

colors: {
  custom: {
    50: '#718bbc',
    500: '#255e9f',
    950: '#000000',
  },
}

SCSS

$custom: #255e9f;
$custom-light: #718bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#255e9f",
  "rgb": {
    "r": 37,
    "g": 94,
    "b": 159
  },
  "hsl": {
    "h": 211.967,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.47868,
    "c": 0.12051,
    "h": 254
  },
  "luminance": 0.10902
}

Semantic roles & 50–950 ramp

primary

#255E9F

secondary

#C0935F

accent

#9942E5

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #255E9F

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

Preview Lab → · Contrast checker → · Palette generator →