#21587C#21587C

#21587C is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.1% C 0.082 H 241.0°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#21587C
RGB	rgb(33, 88, 124)
HSL	hsl(204, 58%, 31%)
HSV	hsv(204, 73%, 49%)
CMYK	cmyk(73.4%, 29%, 0%, 51.4%)
CIE-LAB	lab(35.51, -5.19, -25.53)
CIE-LCH	lch(35.51, 26.05, 258.51°)
OKLab	oklab(44.15% -0.0399 -0.0721)
OKLCH	oklch(44.15% 0.082 241)
XYZ	xyz(7.7536, 8.7572, 20.3465)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21587C #7C4521

analogous

#217C72 #21587C #212A7C

triadic

#21587C #7C2158 #587C21

tetradic

#21587C #72217C #7C4521 #2A7C21

square

#21587C #72217C #7C4521 #2A7C21

split-complementary

#21587C #7C212A #7C7221

monochromatic

#07131B #14364C #21587C #2E7AAC #499ACF

Accessibility & contrast

On white

7.63

#21587C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#21587C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21587C

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21587C	#FFFFFF	#000000	##FFFFFF
##21587C	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587E

Deuteranopia (green-blind)

#3B507B

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #21587c;
/* rgb */ color: rgb(33, 88, 124);
/* oklch */ color: oklch(44.1% 0.082 241.0);

Tailwind

colors: {
  custom: {
    50: '#6987a2',
    500: '#21587c',
    950: '#000000',
  },
}

SCSS

$custom: #21587c;
$custom-light: #6987a2;
$custom-dark: #000000;

JSON

{
  "hex": "#21587c",
  "rgb": {
    "r": 33,
    "g": 88,
    "b": 124
  },
  "hsl": {
    "h": 203.736,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.44147,
    "c": 0.08236,
    "h": 241
  },
  "luminance": 0.08758
}

Semantic roles & 50–950 ramp

primary

#21587C

secondary

#AF724A

accent

#8447E1

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21587C

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

Preview Lab → · Contrast checker → · Palette generator →