#21568B#21568B

#21568B is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.5% C 0.104 H 251.3°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX#21568B
RGBrgb(33, 86, 139)
HSLhsl(210, 62%, 34%)
HSVhsv(210, 76%, 55%)
CMYKcmyk(76.3%, 38.1%, 0%, 45.5%)
CIE-LABlab(35.68, 1.83, -34.46)
CIE-LCHlch(35.68, 34.51, 273.05°)
OKLaboklab(44.54% -0.0332 -0.0981)
OKLCHoklch(44.54% 0.104 251.3)
XYZxyz(8.6134, 8.8420, 25.6738)
Luminance0.0884 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21568B #8B5621
analogous
#218B8B #21568B #21218B
triadic
#21568B #8B2156 #568B21
tetradic
#21568B #8B218B #8B5621 #218B21
square
#21568B #8B218B #8B5621 #218B21
split-complementary
#21568B #8B2121 #8B8B21
monochromatic
#0A1928 #15375A #21568B #2D75BC #5193D6

Accessibility & contrast

On white

7.59
#21568B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.77
#21568B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21568B
7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21568B#FFFFFF#000000##FFFFFF
##21568B1.007.592.777.59
#FFFFFF7.591.0021.001.00
#0000002.7721.001.0021.00
##FFFFFF7.591.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D598D
Deuteranopia (green-blind)
#2E4F8A
Tritanopia (blue-blind)
#00636A
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #21568b;
/* rgb */ color: rgb(33, 86, 139);
/* oklch */ color: oklch(44.5% 0.104 251.3);
Tailwind
colors: {
  custom: {
    50: '#6c85ad',
    500: '#21568b',
    950: '#000000',
  },
}
SCSS
$custom: #21568b;
$custom-light: #6c85ad;
$custom-dark: #000000;
JSON
{
  "hex": "#21568b",
  "rgb": {
    "r": 33,
    "g": 86,
    "b": 139
  },
  "hsl": {
    "h": 210,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.44539,
    "c": 0.10358,
    "h": 251.3
  },
  "luminance": 0.08843
}

Semantic roles & 50–950 ramp

primary
#21568B
secondary
#B9844F
accent
#9443E5
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#080B10
muted
#7A7C7F

Preview Lab

Preview with #21568B

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

Preview Lab → · Contrast checker → · Palette generator →

#21568B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva