#28587B#28587B

#28587B is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.4% C 0.078 H 242.9°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#28587B
RGB	rgb(40, 88, 123)
HSL	hsl(205, 51%, 32%)
HSV	hsv(205, 67%, 48%)
CMYK	cmyk(67.5%, 28.5%, 0%, 51.8%)
CIE-LAB	lab(35.71, -4.34, -24.58)
CIE-LCH	lch(35.71, 24.96, 259.99°)
OKLab	oklab(44.36% -0.0354 -0.0692)
OKLCH	oklch(44.36% 0.078 242.9)
XYZ	xyz(7.9386, 8.8598, 20.0268)
Luminance	0.0886 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28587B #7B4B28

analogous

#287B75 #28587B #282F7B

triadic

#28587B #7B2858 #587B28

tetradic

#28587B #75287B #7B4B28 #2F7B28

square

#28587B #75287B #7B4B28 #2F7B28

split-complementary

#28587B #7B282F #7B7528

monochromatic

#0A161F #19374D #28587B #3779A9 #5698C8

Accessibility & contrast

On white

7.58

#28587B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#28587B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28587B

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28587B	#FFFFFF	#000000	##FFFFFF
##28587B	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48597D

Deuteranopia (green-blind)

#3D507A

Tritanopia (blue-blind)

#006164

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #28587b;
/* rgb */ color: rgb(40, 88, 123);
/* oklch */ color: oklch(44.4% 0.078 242.9);

Tailwind

colors: {
  custom: {
    50: '#6b87a1',
    500: '#28587b',
    950: '#000000',
  },
}

SCSS

$custom: #28587b;
$custom-light: #6b87a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28587b",
  "rgb": {
    "r": 40,
    "g": 88,
    "b": 123
  },
  "hsl": {
    "h": 205.301,
    "s": 50.92,
    "l": 31.961
  },
  "oklch": {
    "l": 0.4436,
    "c": 0.07776,
    "h": 242.9
  },
  "luminance": 0.08861
}

Semantic roles & 50–950 ramp

primary

#28587B

secondary

#AD7852

accent

#894DDA

background

#F6F8F9

surface

#ECEFF2

border

#C7CACC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #28587B

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

Preview Lab → · Contrast checker → · Palette generator →