#21587D#21587D

#21587D is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.2% C 0.084 H 241.8°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#21587D
RGB	rgb(33, 88, 125)
HSL	hsl(204, 58%, 31%)
HSV	hsv(204, 74%, 49%)
CMYK	cmyk(73.6%, 29.6%, 0%, 51%)
CIE-LAB	lab(35.56, -4.81, -26.07)
CIE-LCH	lch(35.56, 26.51, 259.54°)
OKLab	oklab(44.2% -0.0395 -0.0736)
OKLCH	oklch(44.2% 0.084 241.8)
XYZ	xyz(7.8172, 8.7826, 20.6813)
Luminance	0.0878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21587D #7D4621

analogous

#217D74 #21587D #212A7D

triadic

#21587D #7D2158 #587D21

tetradic

#21587D #74217D #7D4621 #2A7D21

square

#21587D #74217D #7D4621 #2A7D21

split-complementary

#21587D #7D212A #7D7421

monochromatic

#07141C #14364D #21587D #2E7AAD #4999CF

Accessibility & contrast

On white

7.62

#21587D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#21587D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21587D

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21587D	#FFFFFF	#000000	##FFFFFF
##21587D	1.00	7.62	2.76	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47597F

Deuteranopia (green-blind)

#3A507C

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #21587d;
/* rgb */ color: rgb(33, 88, 125);
/* oklch */ color: oklch(44.2% 0.084 241.8);

Tailwind

colors: {
  custom: {
    50: '#6987a3',
    500: '#21587d',
    950: '#000000',
  },
}

SCSS

$custom: #21587d;
$custom-light: #6987a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21587d",
  "rgb": {
    "r": 33,
    "g": 88,
    "b": 125
  },
  "hsl": {
    "h": 204.13,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.44203,
    "c": 0.08357,
    "h": 241.8
  },
  "luminance": 0.08783
}

Semantic roles & 50–950 ramp

primary

#21587D

secondary

#B0734A

accent

#8546E1

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21587D

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

Preview Lab → · Contrast checker → · Palette generator →