#255B9E#255B9E

#255B9E is a mid, vivid cyan. Relative luminance 0.103; OKLCH L 47.1% C 0.123 H 255.5°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#255B9E
RGB	rgb(37, 91, 158)
HSL	hsl(213, 62%, 38%)
HSV	hsv(213, 77%, 62%)
CMYK	cmyk(76.6%, 42.4%, 0%, 38%)
CIE-LAB	lab(38.45, 6.52, -41.51)
CIE-LCH	lch(38.45, 42.02, 278.93°)
OKLab	oklab(47.1% -0.0306 -0.1187)
OKLCH	oklch(47.1% 0.123 255.5)
XYZ	xyz(10.6733, 10.3429, 33.7750)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255B9E #9E6825

analogous

#25979E #255B9E #2B259E

triadic

#255B9E #9E255B #5B9E25

tetradic

#255B9E #9E2597 #9E6825 #259E2B

square

#255B9E #9E2597 #9E6825 #259E2B

split-complementary

#255B9E #9E2B25 #979E25

monochromatic

#0E223B #193E6C #255B9E #3178CF #6398DA

Accessibility & contrast

On white

6.84

#255B9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#255B9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255B9E

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255B9E	#FFFFFF	#000000	##FFFFFF
##255B9E	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A61A1

Deuteranopia (green-blind)

#25559D

Tritanopia (blue-blind)

#006B75

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #255b9e;
/* rgb */ color: rgb(37, 91, 158);
/* oklch */ color: oklch(47.1% 0.123 255.5);

Tailwind

colors: {
  custom: {
    50: '#7188bb',
    500: '#255b9e',
    950: '#000000',
  },
}

SCSS

$custom: #255b9e;
$custom-light: #7188bb;
$custom-dark: #000000;

JSON

{
  "hex": "#255b9e",
  "rgb": {
    "r": 37,
    "g": 91,
    "b": 158
  },
  "hsl": {
    "h": 213.223,
    "s": 62.051,
    "l": 38.235
  },
  "oklch": {
    "l": 0.47101,
    "c": 0.12256,
    "h": 255.5
  },
  "luminance": 0.10344
}

Semantic roles & 50–950 ramp

primary

#255B9E

secondary

#C0955F

accent

#9D43E5

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B12

muted

#7B7C81

Preview Lab

Preview with #255B9E

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

Preview Lab → · Contrast checker → · Palette generator →