#21379B#21379B

#21379B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.0% C 0.164 H 267.9°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#21379B
RGB	rgb(33, 55, 155)
HSL	hsl(229, 65%, 37%)
HSV	hsv(229, 79%, 61%)
CMYK	cmyk(78.7%, 64.5%, 0%, 39.2%)
CIE-LAB	lab(27.90, 29.04, -56.77)
CIE-LCH	lch(27.90, 63.76, 297.09°)
OKLab	oklab(38.98% -0.0059 -0.1642)
OKLCH	oklch(38.98% 0.164 267.9)
XYZ	xyz(7.9077, 5.4214, 31.6337)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21379B #9B8521

analogous

#21749B #21379B #48219B

triadic

#21379B #9B2137 #379B21

tetradic

#21379B #9B2174 #9B8521 #219B48

square

#21379B #9B2174 #9B8521 #219B48

split-complementary

#21379B #9B4821 #749B21

monochromatic

#0C1336 #162569 #21379B #2C49CD #5A72DC

Accessibility & contrast

On white

10.07

#21379B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#21379B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21379B

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21379B	#FFFFFF	#000000	##FFFFFF
##21379B	1.00	10.07	2.08	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489E

Deuteranopia (green-blind)

#003C99

Tritanopia (blue-blind)

#005163

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #21379b;
/* rgb */ color: rgb(33, 55, 155);
/* oklch */ color: oklch(39.0% 0.164 267.9);

Tailwind

colors: {
  custom: {
    50: '#716db9',
    500: '#21379b',
    950: '#000000',
  },
}

SCSS

$custom: #21379b;
$custom-light: #716db9;
$custom-dark: #000000;

JSON

{
  "hex": "#21379b",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 155
  },
  "hsl": {
    "h": 229.18,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38979,
    "c": 0.16433,
    "h": 267.9
  },
  "luminance": 0.05422
}

Semantic roles & 50–950 ramp

primary

#21379B

secondary

#C0AD58

accent

#CA40E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #21379B

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

Preview Lab → · Contrast checker → · Palette generator →