#21639D#21639D

#21639D is a mid, moderate cyan. Relative luminance 0.117; OKLCH L 48.8% C 0.114 H 249.1°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#21639D
RGB	rgb(33, 99, 157)
HSL	hsl(208, 65%, 37%)
HSV	hsv(208, 79%, 62%)
CMYK	cmyk(79%, 36.9%, 0%, 38.4%)
CIE-LAB	lab(40.70, 0.52, -37.33)
CIE-LCH	lch(40.70, 37.33, 270.80°)
OKLab	oklab(48.81% -0.0406 -0.1063)
OKLCH	oklch(48.81% 0.114 249.1)
XYZ	xyz(11.1725, 11.6800, 33.5574)
Luminance	0.1168 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21639D #9D5B21

analogous

#219D99 #21639D #21259D

triadic

#21639D #9D2163 #639D21

tetradic

#21639D #99219D #9D5B21 #259D21

square

#21639D #99219D #9D5B21 #259D21

split-complementary

#21639D #9D2125 #9D9921

monochromatic

#0C2338 #16436A #21639D #2C83D0 #5CA0DD

Accessibility & contrast

On white

6.29

#21639D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#21639D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21639D

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21639D	#FFFFFF	#000000	##FFFFFF
##21639D	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48669F

Deuteranopia (green-blind)

#355B9C

Tritanopia (blue-blind)

#007178

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #21639d;
/* rgb */ color: rgb(33, 99, 157);
/* oklch */ color: oklch(48.8% 0.114 249.1);

Tailwind

colors: {
  custom: {
    50: '#708fba',
    500: '#21639d',
    950: '#000000',
  },
}

SCSS

$custom: #21639d;
$custom-light: #708fba;
$custom-dark: #000000;

JSON

{
  "hex": "#21639d",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 157
  },
  "hsl": {
    "h": 208.065,
    "s": 65.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.48807,
    "c": 0.11383,
    "h": 249.1
  },
  "luminance": 0.11681
}

Semantic roles & 50–950 ramp

primary

#21639D

secondary

#C18A59

accent

#8E40E8

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C11

muted

#7B7D80

Preview Lab

Preview with #21639D

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

Preview Lab → · Contrast checker → · Palette generator →