#28577B#28577B

#28577B is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.1% C 0.079 H 244.1°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#28577B
RGB	rgb(40, 87, 123)
HSL	hsl(206, 51%, 32%)
HSV	hsv(206, 67%, 48%)
CMYK	cmyk(67.5%, 29.3%, 0%, 51.8%)
CIE-LAB	lab(35.39, -3.72, -25.08)
CIE-LCH	lch(35.39, 25.35, 261.57°)
OKLab	oklab(44.11% -0.0343 -0.0707)
OKLCH	oklch(44.11% 0.079 244.1)
XYZ	xyz(7.8571, 8.6968, 19.9996)
Luminance	0.0870 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28577B #7B4C28

analogous

#287B76 #28577B #282E7B

triadic

#28577B #7B2857 #577B28

tetradic

#28577B #76287B #7B4C28 #2E7B28

square

#28577B #76287B #7B4C28 #2E7B28

split-complementary

#28577B #7B282E #7B7628

monochromatic

#0A161F #19364D #28577B #3778A9 #5696C8

Accessibility & contrast

On white

7.67

#28577B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#28577B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28577B

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28577B	#FFFFFF	#000000	##FFFFFF
##28577B	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587D

Deuteranopia (green-blind)

#3C507A

Tritanopia (blue-blind)

#006064

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #28577b;
/* rgb */ color: rgb(40, 87, 123);
/* oklch */ color: oklch(44.1% 0.079 244.1);

Tailwind

colors: {
  custom: {
    50: '#6b86a1',
    500: '#28577b',
    950: '#000000',
  },
}

SCSS

$custom: #28577b;
$custom-light: #6b86a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28577b",
  "rgb": {
    "r": 40,
    "g": 87,
    "b": 123
  },
  "hsl": {
    "h": 206.024,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.44107,
    "c": 0.07856,
    "h": 244.1
  },
  "luminance": 0.08698
}

Semantic roles & 50–950 ramp

primary

#28577B

secondary

#AD7952

accent

#8B4DDA

background

#F6F8F9

surface

#ECEFF2

border

#C7CACC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #28577B

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

Preview Lab → · Contrast checker → · Palette generator →