#21557C#21557C

#21557C is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.085 H 244.4°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX#21557C
RGBrgb(33, 85, 124)
HSLhsl(206, 58%, 31%)
HSVhsv(206, 73%, 49%)
CMYKcmyk(73.4%, 31.5%, 0%, 51.4%)
CIE-LABlab(34.55, -3.30, -27.04)
CIE-LCHlch(34.55, 27.24, 263.03°)
OKLaboklab(43.39% -0.0367 -0.0765)
OKLCHoklch(43.39% 0.085 244.4)
XYZxyz(7.5124, 8.2747, 20.2661)
Luminance0.0828 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21557C #7C4821
analogous
#217C75 #21557C #21277C
triadic
#21557C #7C2155 #557C21
tetradic
#21557C #75217C #7C4821 #277C21
square
#21557C #75217C #7C4821 #277C21
split-complementary
#21557C #7C2127 #7C7521
monochromatic
#07131B #14344C #21557C #2E76AC #4995CF

Accessibility & contrast

On white

7.91
#21557C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.66
#21557C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21557C
7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21557C#FFFFFF#000000##FFFFFF
##21557C1.007.912.667.91
#FFFFFF7.911.0021.001.00
#0000002.6621.001.0021.00
##FFFFFF7.911.0021.001.00

Color blindness preview

Protanopia (red-blind)
#43567E
Deuteranopia (green-blind)
#374D7B
Tritanopia (blue-blind)
#005E63
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #21557c;
/* rgb */ color: rgb(33, 85, 124);
/* oklch */ color: oklch(43.4% 0.085 244.4);
Tailwind
colors: {
  custom: {
    50: '#6984a2',
    500: '#21557c',
    950: '#000000',
  },
}
SCSS
$custom: #21557c;
$custom-light: #6984a2;
$custom-dark: #000000;
JSON
{
  "hex": "#21557c",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 124
  },
  "hsl": {
    "h": 205.714,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.43385,
    "c": 0.08481,
    "h": 244.4
  },
  "luminance": 0.08276
}

Semantic roles & 50–950 ramp

primary
#21557C
secondary
#AF754A
accent
#8947E1
background
#F6F8FA
surface
#EBEFF3
border
#C6CACD
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #21557C

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

Preview Lab → · Contrast checker → · Palette generator →

#21557C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva