#21318A#21318A

#21318A is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.148 H 269.4°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#21318A
RGB	rgb(33, 49, 138)
HSL	hsl(231, 61%, 34%)
HSV	hsv(231, 76%, 54%)
CMYK	cmyk(76.1%, 64.5%, 0%, 45.9%)
CIE-LAB	lab(24.81, 26.57, -51.36)
CIE-LCH	lch(24.81, 57.83, 297.35°)
OKLab	oklab(36.22% -0.0014 -0.1484)
OKLCH	oklch(36.22% 0.148 269.4)
XYZ	xyz(6.3114, 4.3543, 24.5477)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21318A #8A7A21

analogous

#21658A #21318A #45218A

triadic

#21318A #8A2131 #318A21

tetradic

#21318A #8A2165 #8A7A21 #218A45

square

#21318A #8A2165 #8A7A21 #218A45

split-complementary

#21318A #8A4521 #658A21

monochromatic

#090E27 #151F59 #21318A #2D43BB #5064D5

Accessibility & contrast

On white

11.22

#21318A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#21318A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21318A

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21318A	#FFFFFF	#000000	##FFFFFF
##21318A	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408D

Deuteranopia (green-blind)

#003688

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #21318a;
/* rgb */ color: rgb(33, 49, 138);
/* oklch */ color: oklch(36.2% 0.148 269.4);

Tailwind

colors: {
  custom: {
    50: '#6d69ad',
    500: '#21318a',
    950: '#000000',
  },
}

SCSS

$custom: #21318a;
$custom-light: #6d69ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21318a",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 138
  },
  "hsl": {
    "h": 230.857,
    "s": 61.404,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36224,
    "c": 0.14845,
    "h": 269.4
  },
  "luminance": 0.04355
}

Semantic roles & 50–950 ramp

primary

#21318A

secondary

#B9A84E

accent

#CC43E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #21318A

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

Preview Lab → · Contrast checker → · Palette generator →