#21576D#21576D

#21576D is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.1% C 0.067 H 228.3°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#21576D
RGB	rgb(33, 87, 109)
HSL	hsl(197, 54%, 28%)
HSV	hsv(197, 70%, 43%)
CMYK	cmyk(69.7%, 20.2%, 0%, 57.3%)
CIE-LAB	lab(34.48, -10.09, -17.83)
CIE-LCH	lch(34.48, 20.49, 240.49°)
OKLab	oklab(43.1% -0.0445 -0.0499)
OKLCH	oklch(43.1% 0.067 228.3)
XYZ	xyz(6.7946, 8.2431, 15.6980)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21576D #6D3721

analogous

#216D5D #21576D #21316D

triadic

#21576D #6D2157 #576D21

tetradic

#21576D #5D216D #6D3721 #316D21

square

#21576D #5D216D #6D3721 #316D21

split-complementary

#21576D #6D2131 #6D5D21

monochromatic

#071317 #13323E #21576D #2F7C9C #42A0C6

Accessibility & contrast

On white

7.93

#21576D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#21576D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21576D

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21576D	#FFFFFF	#000000	##FFFFFF
##21576D	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B556E

Deuteranopia (green-blind)

#414E6D

Tritanopia (blue-blind)

#005D5E

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #21576d;
/* rgb */ color: rgb(33, 87, 109);
/* oklch */ color: oklch(43.1% 0.067 228.3);

Tailwind

colors: {
  custom: {
    50: '#668697',
    500: '#21576d',
    950: '#000000',
  },
}

SCSS

$custom: #21576d;
$custom-light: #668697;
$custom-dark: #000000;

JSON

{
  "hex": "#21576d",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 109
  },
  "hsl": {
    "h": 197.368,
    "s": 53.521,
    "l": 27.843
  },
  "oklch": {
    "l": 0.43098,
    "c": 0.06682,
    "h": 228.3
  },
  "luminance": 0.08244
}

Semantic roles & 50–950 ramp

primary

#21576D

secondary

#A16249

accent

#754BDD

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #21576D

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

Preview Lab → · Contrast checker → · Palette generator →