#21679B#21679B

#21679B is a mid, moderate cyan. Relative luminance 0.124; OKLCH L 49.7% C 0.107 H 245.3°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX#21679B
RGBrgb(33, 103, 155)
HSLhsl(206, 65%, 37%)
HSVhsv(206, 79%, 61%)
CMYKcmyk(78.7%, 33.5%, 0%, 39.2%)
CIE-LABlab(41.83, -2.74, -34.36)
CIE-LCHlch(41.83, 34.47, 265.44°)
OKLaboklab(49.66% -0.045 -0.0976)
OKLCHoklch(49.66% 0.107 245.3)
XYZxyz(11.3916, 12.3890, 32.7949)
Luminance0.1239 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21679B #9B5521
analogous
#219B92 #21679B #212A9B
triadic
#21679B #9B2167 #679B21
tetradic
#21679B #92219B #9B5521 #2A9B21
square
#21679B #92219B #9B5521 #2A9B21
split-complementary
#21679B #9B212A #9B9221
monochromatic
#0C2436 #164569 #21679B #2C89CD #5AA5DC

Accessibility & contrast

On white

6.04
#21679B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.48
#21679B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21679B
6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21679B#FFFFFF#000000##FFFFFF
##21679B1.006.043.486.04
#FFFFFF6.041.0021.001.00
#0000003.4821.001.0021.00
##FFFFFF6.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4F699D
Deuteranopia (green-blind)
#3E5E9A
Tritanopia (blue-blind)
#00747A
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #21679b;
/* rgb */ color: rgb(33, 103, 155);
/* oklch */ color: oklch(49.7% 0.107 245.3);
Tailwind
colors: {
  custom: {
    50: '#6f92b9',
    500: '#21679b',
    950: '#000000',
  },
}
SCSS
$custom: #21679b;
$custom-light: #6f92b9;
$custom-dark: #000000;
JSON
{
  "hex": "#21679b",
  "rgb": {
    "r": 33,
    "g": 103,
    "b": 155
  },
  "hsl": {
    "h": 205.574,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.49657,
    "c": 0.10745,
    "h": 245.3
  },
  "luminance": 0.1239
}

Semantic roles & 50–950 ramp

primary
#21679B
secondary
#C08458
accent
#8840E8
background
#F7F8FB
surface
#EDF0F6
border
#C8CBD0
text
#080C11
muted
#7B7D80

Preview Lab

Preview with #21679B

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

Preview Lab → · Contrast checker → · Palette generator →

#21679B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva