#28537B#28537B

#28537B is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.1% C 0.082 H 248.8°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#28537B
RGB	rgb(40, 83, 123)
HSL	hsl(209, 51%, 32%)
HSV	hsv(209, 67%, 48%)
CMYK	cmyk(67.5%, 32.5%, 0%, 51.8%)
CIE-LAB	lab(34.12, -1.18, -27.07)
CIE-LCH	lch(34.12, 27.10, 267.50°)
OKLab	oklab(43.11% -0.0297 -0.0765)
OKLCH	oklch(43.11% 0.082 248.8)
XYZ	xyz(7.5422, 8.0669, 19.8946)
Luminance	0.0807 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28537B #7B5028

analogous

#287B7A #28537B #282A7B

triadic

#28537B #7B2853 #537B28

tetradic

#28537B #7A287B #7B5028 #2A7B28

square

#28537B #7A287B #7B5028 #2A7B28

split-complementary

#28537B #7B282A #7B7A28

monochromatic

#0A151F #19344D #28537B #3772A9 #5691C8

Accessibility & contrast

On white

8.03

#28537B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#28537B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28537B

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28537B	#FFFFFF	#000000	##FFFFFF
##28537B	1.00	8.03	2.61	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#42557D

Deuteranopia (green-blind)

#364D7A

Tritanopia (blue-blind)

#005C61

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #28537b;
/* rgb */ color: rgb(40, 83, 123);
/* oklch */ color: oklch(43.1% 0.082 248.8);

Tailwind

colors: {
  custom: {
    50: '#6b83a1',
    500: '#28537b',
    950: '#000000',
  },
}

SCSS

$custom: #28537b;
$custom-light: #6b83a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28537b",
  "rgb": {
    "r": 40,
    "g": 83,
    "b": 123
  },
  "hsl": {
    "h": 208.916,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.43105,
    "c": 0.0821,
    "h": 248.8
  },
  "luminance": 0.08068
}

Semantic roles & 50–950 ramp

primary

#28537B

secondary

#AD7E52

accent

#914DDA

background

#F6F7F9

surface

#ECEEF2

border

#C7C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #28537B

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

Preview Lab → · Contrast checker → · Palette generator →