#216D9B#216D9B

#216D9B is a mid, moderate cyan. Relative luminance 0.136; OKLCH L 51.1% C 0.102 H 240.3°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX#216D9B
RGBrgb(33, 109, 155)
HSLhsl(203, 65%, 37%)
HSVhsv(203, 79%, 61%)
CMYKcmyk(78.7%, 29.7%, 0%, 39.2%)
CIE-LABlab(43.69, -6.39, -31.43)
CIE-LCHlch(43.69, 32.07, 258.51°)
OKLaboklab(51.13% -0.0508 -0.0889)
OKLCHoklch(51.13% 0.102 240.3)
XYZxyz(12.0099, 13.6257, 33.0010)
Luminance0.1363 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#216D9B #9B4F21
analogous
#219B8C #216D9B #21309B
triadic
#216D9B #9B216D #6D9B21
tetradic
#216D9B #8C219B #9B4F21 #309B21
square
#216D9B #8C219B #9B4F21 #309B21
split-complementary
#216D9B #9B2130 #9B8C21
monochromatic
#0C2636 #164A69 #216D9B #2C90CD #5AABDC

Accessibility & contrast

On white

5.64
#216D9B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.73
#216D9B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #216D9B
5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##216D9B#FFFFFF#000000##FFFFFF
##216D9B1.005.643.735.64
#FFFFFF5.641.0021.001.00
#0000003.7321.001.0021.00
##FFFFFF5.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#576E9D
Deuteranopia (green-blind)
#47629A
Tritanopia (blue-blind)
#00797D
Achromatopsia (no color)
#676767

Design tokens & code

CSS
--color: #216d9b;
/* rgb */ color: rgb(33, 109, 155);
/* oklch */ color: oklch(51.1% 0.102 240.3);
Tailwind
colors: {
  custom: {
    50: '#6f96b8',
    500: '#216d9b',
    950: '#000000',
  },
}
SCSS
$custom: #216d9b;
$custom-light: #6f96b8;
$custom-dark: #000000;
JSON
{
  "hex": "#216d9b",
  "rgb": {
    "r": 33,
    "g": 109,
    "b": 155
  },
  "hsl": {
    "h": 202.623,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.51131,
    "c": 0.10241,
    "h": 240.3
  },
  "luminance": 0.13627
}

Semantic roles & 50–950 ramp

primary
#216D9B
secondary
#C07F58
accent
#7F40E8
background
#F7F9FB
surface
#EDF2F6
border
#C8CCD0
text
#090D11
muted
#7B7E80

Preview Lab

Preview with #216D9B

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

Preview Lab → · Contrast checker → · Palette generator →

#216D9B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva