#21308A#21308A

#21308A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.150 H 269.7°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#21308A
RGB	rgb(33, 48, 138)
HSL	hsl(231, 61%, 34%)
HSV	hsv(231, 76%, 54%)
CMYK	cmyk(76.1%, 65.2%, 0%, 45.9%)
CIE-LAB	lab(24.55, 27.25, -51.79)
CIE-LCH	lch(24.55, 58.52, 297.75°)
OKLab	oklab(36.03% -0.0007 -0.1497)
OKLCH	oklch(36.03% 0.15 269.7)
XYZ	xyz(6.2700, 4.2716, 24.5339)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21308A #8A7B21

analogous

#21648A #21308A #46218A

triadic

#21308A #8A2130 #308A21

tetradic

#21308A #8A2164 #8A7B21 #218A46

square

#21308A #8A2164 #8A7B21 #218A46

split-complementary

#21308A #8A4621 #648A21

monochromatic

#090E27 #151F59 #21308A #2D41BB #5063D5

Accessibility & contrast

On white

11.32

#21308A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#21308A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21308A

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21308A	#FFFFFF	#000000	##FFFFFF
##21308A	1.00	11.32	1.85	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8D

Deuteranopia (green-blind)

#003588

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #21308a;
/* rgb */ color: rgb(33, 48, 138);
/* oklch */ color: oklch(36.0% 0.150 269.7);

Tailwind

colors: {
  custom: {
    50: '#6d68ad',
    500: '#21308a',
    950: '#000000',
  },
}

SCSS

$custom: #21308a;
$custom-light: #6d68ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21308a",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 138
  },
  "hsl": {
    "h": 231.429,
    "s": 61.404,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36032,
    "c": 0.1497,
    "h": 269.7
  },
  "luminance": 0.04272
}

Semantic roles & 50–950 ramp

primary

#21308A

secondary

#B9A94E

accent

#CD43E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #21308A

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

Preview Lab → · Contrast checker → · Palette generator →