#21639E#21639E

#21639E is a mid, moderate cyan. Relative luminance 0.117; OKLCH L 48.9% C 0.115 H 249.5°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#21639E
RGB	rgb(33, 99, 158)
HSL	hsl(208, 65%, 37%)
HSV	hsv(208, 79%, 62%)
CMYK	cmyk(79.1%, 37.3%, 0%, 38%)
CIE-LAB	lab(40.76, 0.91, -37.84)
CIE-LCH	lch(40.76, 37.85, 271.37°)
OKLab	oklab(48.87% -0.0403 -0.1078)
OKLCH	oklch(48.87% 0.115 249.5)
XYZ	xyz(11.2582, 11.7143, 34.0089)
Luminance	0.1172 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21639E #9E5C21

analogous

#219E9B #21639E #21259E

triadic

#21639E #9E2163 #639E21

tetradic

#21639E #9B219E #9E5C21 #259E21

square

#21639E #9B219E #9E5C21 #259E21

split-complementary

#21639E #9E2125 #9E9B21

monochromatic

#0C2439 #16436B #21639E #2C83D1 #5CA0DD

Accessibility & contrast

On white

6.28

#21639E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#21639E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21639E

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21639E	#FFFFFF	#000000	##FFFFFF
##21639E	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4766A0

Deuteranopia (green-blind)

#355B9D

Tritanopia (blue-blind)

#007179

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #21639e;
/* rgb */ color: rgb(33, 99, 158);
/* oklch */ color: oklch(48.9% 0.115 249.5);

Tailwind

colors: {
  custom: {
    50: '#708fbb',
    500: '#21639e',
    950: '#000000',
  },
}

SCSS

$custom: #21639e;
$custom-light: #708fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#21639e",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 158
  },
  "hsl": {
    "h": 208.32,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.48869,
    "c": 0.11512,
    "h": 249.5
  },
  "luminance": 0.11716
}

Semantic roles & 50–950 ramp

primary

#21639E

secondary

#C18A59

accent

#8F3FE8

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #21639E

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

Preview Lab → · Contrast checker → · Palette generator →