#21278C#21278C

#21278C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.6% C 0.163 H 271.6°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#21278C
RGB	rgb(33, 39, 140)
HSL	hsl(237, 62%, 34%)
HSV	hsv(237, 76%, 55%)
CMYK	cmyk(76.4%, 72.1%, 0%, 45.1%)
CIE-LAB	lab(22.54, 33.90, -56.34)
CIE-LCH	lch(22.54, 65.75, 301.04°)
OKLab	oklab(34.63% 0.0046 -0.163)
OKLCH	oklch(34.63% 0.163 271.6)
XYZ	xyz(6.0847, 3.6672, 25.1930)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21278C #8C8621

analogous

#215D8C #21278C #51218C

triadic

#21278C #8C2127 #278C21

tetradic

#21278C #8C215D #8C8621 #218C51

square

#21278C #8C215D #8C8621 #218C51

split-complementary

#21278C #8C5121 #5D8C21

monochromatic

#0A0B29 #15195A #21278C #2D35BE #5159D6

Accessibility & contrast

On white

12.11

#21278C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#21278C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21278C

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21278C	#FFFFFF	#000000	##FFFFFF
##21278C	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8F

Deuteranopia (green-blind)

#00318A

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #21278c;
/* rgb */ color: rgb(33, 39, 140);
/* oklch */ color: oklch(34.6% 0.163 271.6);

Tailwind

colors: {
  custom: {
    50: '#6f62af',
    500: '#21278c',
    950: '#000000',
  },
}

SCSS

$custom: #21278c;
$custom-light: #6f62af;
$custom-dark: #000000;

JSON

{
  "hex": "#21278c",
  "rgb": {
    "r": 33,
    "g": 39,
    "b": 140
  },
  "hsl": {
    "h": 236.636,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.34629,
    "c": 0.16309,
    "h": 271.6
  },
  "luminance": 0.03668
}

Semantic roles & 50–950 ramp

primary

#21278C

secondary

#B9B44F

accent

#DC43E5

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #21278C

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

Preview Lab → · Contrast checker → · Palette generator →