#255B9F#255B9F

#255B9F is a mid, vivid cyan. Relative luminance 0.104; OKLCH L 47.2% C 0.124 H 255.8°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#255B9F
RGB	rgb(37, 91, 159)
HSL	hsl(213, 62%, 38%)
HSV	hsv(213, 77%, 62%)
CMYK	cmyk(76.7%, 42.8%, 0%, 37.6%)
CIE-LAB	lab(38.51, 6.91, -42.01)
CIE-LCH	lch(38.51, 42.57, 279.34°)
OKLab	oklab(47.17% -0.0304 -0.1201)
OKLCH	oklch(47.17% 0.124 255.8)
XYZ	xyz(10.7597, 10.3775, 34.2301)
Luminance	0.1038 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255B9F #9F6925

analogous

#25989F #255B9F #2C259F

triadic

#255B9F #9F255B #5B9F25

tetradic

#255B9F #9F2598 #9F6925 #259F2C

square

#255B9F #9F2598 #9F6925 #259F2C

split-complementary

#255B9F #9F2C25 #989F25

monochromatic

#0E223C #193F6D #255B9F #3278CF #6498DB

Accessibility & contrast

On white

6.83

#255B9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#255B9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255B9F

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255B9F	#FFFFFF	#000000	##FFFFFF
##255B9F	1.00	6.83	3.08	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A61A2

Deuteranopia (green-blind)

#24569E

Tritanopia (blue-blind)

#006B75

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #255b9f;
/* rgb */ color: rgb(37, 91, 159);
/* oklch */ color: oklch(47.2% 0.124 255.8);

Tailwind

colors: {
  custom: {
    50: '#7188bc',
    500: '#255b9f',
    950: '#000000',
  },
}

SCSS

$custom: #255b9f;
$custom-light: #7188bc;
$custom-dark: #000000;

JSON

{
  "hex": "#255b9f",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 159
  },
  "hsl": {
    "h": 213.443,
    "s": 62.245,
    "l": 38.431
  },
  "oklch": {
    "l": 0.47167,
    "c": 0.12393,
    "h": 255.8
  },
  "luminance": 0.10379
}

Semantic roles & 50–950 ramp

primary

#255B9F

secondary

#C0955F

accent

#9D42E5

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #255B9F

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

Preview Lab → · Contrast checker → · Palette generator →