#21556E#21556E

#21556E is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.6% C 0.069 H 232.5°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#21556E
RGB	rgb(33, 85, 110)
HSL	hsl(199, 54%, 28%)
HSV	hsv(199, 70%, 43%)
CMYK	cmyk(70%, 22.7%, 0%, 56.9%)
CIE-LAB	lab(33.87, -8.52, -19.40)
CIE-LCH	lch(33.87, 21.19, 246.30°)
OKLab	oklab(42.62% -0.0417 -0.0544)
OKLCH	oklch(42.62% 0.069 232.5)
XYZ	xyz(6.6891, 7.9454, 15.9299)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21556E #6E3A21

analogous

#216E60 #21556E #212E6E

triadic

#21556E #6E2155 #556E21

tetradic

#21556E #60216E #6E3A21 #2E6E21

square

#21556E #60216E #6E3A21 #2E6E21

split-complementary

#21556E #6E212E #6E6021

monochromatic

#071218 #13313F #21556E #2F799D #439CC7

Accessibility & contrast

On white

8.11

#21556E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#21556E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21556E

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21556E	#FFFFFF	#000000	##FFFFFF
##21556E	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49546F

Deuteranopia (green-blind)

#3E4C6E

Tritanopia (blue-blind)

#005C5D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #21556e;
/* rgb */ color: rgb(33, 85, 110);
/* oklch */ color: oklch(42.6% 0.069 232.5);

Tailwind

colors: {
  custom: {
    50: '#668497',
    500: '#21556e',
    950: '#000000',
  },
}

SCSS

$custom: #21556e;
$custom-light: #668497;
$custom-dark: #000000;

JSON

{
  "hex": "#21556e",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 110
  },
  "hsl": {
    "h": 199.481,
    "s": 53.846,
    "l": 28.039
  },
  "oklch": {
    "l": 0.42622,
    "c": 0.06857,
    "h": 232.5
  },
  "luminance": 0.07946
}

Semantic roles & 50–950 ramp

primary

#21556E

secondary

#A26649

accent

#7A4BDD

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #21556E

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

Preview Lab → · Contrast checker → · Palette generator →