#255A8B#255A8B

#255A8B is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.7% C 0.098 H 249.3°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#255A8B
RGB	rgb(37, 90, 139)
HSL	hsl(209, 58%, 35%)
HSV	hsv(209, 73%, 55%)
CMYK	cmyk(73.4%, 35.3%, 0%, 45.5%)
CIE-LAB	lab(37.06, -0.14, -32.27)
CIE-LCH	lch(37.06, 32.27, 269.74°)
OKLab	oklab(45.66% -0.0346 -0.0916)
OKLCH	oklch(45.66% 0.098 249.3)
XYZ	xyz(9.0776, 9.5687, 25.7896)
Luminance	0.0957 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255A8B #8B5625

analogous

#258B89 #255A8B #25278B

triadic

#255A8B #8B255A #5A8B25

tetradic

#255A8B #89258B #8B5625 #278B25

square

#255A8B #89258B #8B5625 #278B25

split-complementary

#255A8B #8B2527 #8B8925

monochromatic

#0B1B2A #183B5B #255A8B #3279BB #5898D3

Accessibility & contrast

On white

7.21

#255A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#255A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255A8B

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255A8B	#FFFFFF	#000000	##FFFFFF
##255A8B	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445C8D

Deuteranopia (green-blind)

#35538A

Tritanopia (blue-blind)

#00666C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #255a8b;
/* rgb */ color: rgb(37, 90, 139);
/* oklch */ color: oklch(45.7% 0.098 249.3);

Tailwind

colors: {
  custom: {
    50: '#6d88ad',
    500: '#255a8b',
    950: '#000000',
  },
}

SCSS

$custom: #255a8b;
$custom-light: #6d88ad;
$custom-dark: #000000;

JSON

{
  "hex": "#255a8b",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 139
  },
  "hsl": {
    "h": 208.824,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.45658,
    "c": 0.09792,
    "h": 249.3
  },
  "luminance": 0.0957
}

Semantic roles & 50–950 ramp

primary

#255A8B

secondary

#B78455

accent

#9147E1

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#080B10

muted

#7B7C7F

Preview Lab

Preview with #255A8B

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

Preview Lab → · Contrast checker → · Palette generator →