#21288A#21288A

#21288A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.6% C 0.159 H 271.5°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#21288A
RGB	rgb(33, 40, 138)
HSL	hsl(236, 61%, 34%)
HSV	hsv(236, 76%, 54%)
CMYK	cmyk(76.1%, 71%, 0%, 45.9%)
CIE-LAB	lab(22.57, 32.54, -55.04)
CIE-LCH	lch(22.57, 63.94, 300.59°)
OKLab	oklab(34.59% 0.0043 -0.1592)
OKLCH	oklch(34.59% 0.159 271.5)
XYZ	xyz(5.9719, 3.6753, 24.4345)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21288A #8A8321

analogous

#215C8A #21288A #4E218A

triadic

#21288A #8A2128 #288A21

tetradic

#21288A #8A215C #8A8321 #218A4E

square

#21288A #8A215C #8A8321 #218A4E

split-complementary

#21288A #8A4E21 #5C8A21

monochromatic

#090B27 #151A59 #21288A #2D36BB #5059D5

Accessibility & contrast

On white

12.10

#21288A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#21288A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21288A

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21288A	#FFFFFF	#000000	##FFFFFF
##21288A	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8D

Deuteranopia (green-blind)

#003188

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #21288a;
/* rgb */ color: rgb(33, 40, 138);
/* oklch */ color: oklch(34.6% 0.159 271.5);

Tailwind

colors: {
  custom: {
    50: '#6e62ad',
    500: '#21288a',
    950: '#000000',
  },
}

SCSS

$custom: #21288a;
$custom-light: #6e62ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21288a",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 138
  },
  "hsl": {
    "h": 236,
    "s": 61.404,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34587,
    "c": 0.15931,
    "h": 271.5
  },
  "luminance": 0.03676
}

Semantic roles & 50–950 ramp

primary

#21288A

secondary

#B9B14E

accent

#DA43E5

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #21288A

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

Preview Lab → · Contrast checker → · Palette generator →