#21376B#21376B

#21376B is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.9% C 0.095 H 264.7°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#21376B
RGB	rgb(33, 55, 107)
HSL	hsl(222, 53%, 27%)
HSV	hsv(222, 69%, 42%)
CMYK	cmyk(69.2%, 48.6%, 0%, 58%)
CIE-LAB	lab(24.05, 10.18, -32.97)
CIE-LCH	lch(24.05, 34.51, 287.15°)
OKLab	oklab(34.88% -0.0087 -0.0943)
OKLCH	oklch(34.88% 0.095 264.7)
XYZ	xyz(4.6463, 4.1168, 14.4568)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21376B #6B5521

analogous

#215C6B #21376B #30216B

triadic

#21376B #6B2137 #376B21

tetradic

#21376B #6B215C #6B5521 #216B30

square

#21376B #6B215C #6B5521 #216B30

split-complementary

#21376B #6B3021 #5C6B21

monochromatic

#070C17 #131F3C #21376B #2F4F9A #4269C5

Accessibility & contrast

On white

11.52

#21376B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#21376B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21376B

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21376B	#FFFFFF	#000000	##FFFFFF
##21376B	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3D6D

Deuteranopia (green-blind)

#0F366A

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #21376b;
/* rgb */ color: rgb(33, 55, 107);
/* oklch */ color: oklch(34.9% 0.095 264.7);

Tailwind

colors: {
  custom: {
    50: '#656d96',
    500: '#21376b',
    950: '#000000',
  },
}

SCSS

$custom: #21376b;
$custom-light: #656d96;
$custom-dark: #000000;

JSON

{
  "hex": "#21376b",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 107
  },
  "hsl": {
    "h": 222.162,
    "s": 52.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.3488,
    "c": 0.0947,
    "h": 264.7
  },
  "luminance": 0.04117
}

Semantic roles & 50–950 ramp

primary

#21376B

secondary

#9F8549

accent

#B14CDC

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #21376B

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

Preview Lab → · Contrast checker → · Palette generator →