#21639F#21639F

#21639F is a mid, moderate cyan. Relative luminance 0.117; OKLCH L 48.9% C 0.116 H 249.9°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX#21639F
RGBrgb(33, 99, 159)
HSLhsl(209, 66%, 38%)
HSVhsv(209, 79%, 62%)
CMYKcmyk(79.2%, 37.7%, 0%, 37.6%)
CIE-LABlab(40.81, 1.29, -38.35)
CIE-LCHlch(40.81, 38.37, 271.93°)
OKLaboklab(48.93% -0.0401 -0.1093)
OKLCHoklch(48.93% 0.116 249.9)
XYZxyz(11.3447, 11.7489, 34.4640)
Luminance0.1175 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21639F #9F5D21
analogous
#219F9C #21639F #21249F
triadic
#21639F #9F2163 #639F21
tetradic
#21639F #9C219F #9F5D21 #249F21
square
#21639F #9C219F #9F5D21 #249F21
split-complementary
#21639F #9F2124 #9F9C21
monochromatic
#0C243A #16436C #21639F #2C83D2 #5DA0DD

Accessibility & contrast

On white

6.27
#21639F on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.35
#21639F on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21639F
6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21639F#FFFFFF#000000##FFFFFF
##21639F1.006.273.356.27
#FFFFFF6.271.0021.001.00
#0000003.3521.001.0021.00
##FFFFFF6.271.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4766A1
Deuteranopia (green-blind)
#345B9E
Tritanopia (blue-blind)
#007179
Achromatopsia (no color)
#606060

Design tokens & code

CSS
--color: #21639f;
/* rgb */ color: rgb(33, 99, 159);
/* oklch */ color: oklch(48.9% 0.116 249.9);
Tailwind
colors: {
  custom: {
    50: '#708fbc',
    500: '#21639f',
    950: '#000000',
  },
}
SCSS
$custom: #21639f;
$custom-light: #708fbc;
$custom-dark: #000000;
JSON
{
  "hex": "#21639f",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 159
  },
  "hsl": {
    "h": 208.571,
    "s": 65.625,
    "l": 37.647
  },
  "oklch": {
    "l": 0.48931,
    "c": 0.11642,
    "h": 249.9
  },
  "luminance": 0.1175
}

Semantic roles & 50–950 ramp

primary
#21639F
secondary
#C28B5A
accent
#903FE9
background
#F7F8FB
surface
#EDF0F6
border
#C8CBD0
text
#090C12
muted
#7B7D81

Preview Lab

Preview with #21639F

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

Preview Lab → · Contrast checker → · Palette generator →

#21639F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva