#21288C#21288C

#21288C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.8% C 0.162 H 271.4°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#21288C
RGB	rgb(33, 40, 140)
HSL	hsl(236, 62%, 34%)
HSV	hsv(236, 76%, 55%)
CMYK	cmyk(76.4%, 71.4%, 0%, 45.1%)
CIE-LAB	lab(22.77, 33.27, -55.95)
CIE-LCH	lch(22.77, 65.10, 300.73°)
OKLab	oklab(34.8% 0.004 -0.1619)
OKLCH	oklch(34.8% 0.162 271.4)
XYZ	xyz(6.1180, 3.7337, 25.2041)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21288C #8C8521

analogous

#215E8C #21288C #50218C

triadic

#21288C #8C2128 #288C21

tetradic

#21288C #8C215E #8C8521 #218C50

square

#21288C #8C215E #8C8521 #218C50

split-complementary

#21288C #8C5021 #5E8C21

monochromatic

#0A0C29 #151A5A #21288C #2D36BE #515AD6

Accessibility & contrast

On white

12.02

#21288C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#21288C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21288C

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21288C	#FFFFFF	#000000	##FFFFFF
##21288C	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8F

Deuteranopia (green-blind)

#00318A

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #21288c;
/* rgb */ color: rgb(33, 40, 140);
/* oklch */ color: oklch(34.8% 0.162 271.4);

Tailwind

colors: {
  custom: {
    50: '#6f62af',
    500: '#21288c',
    950: '#000000',
  },
}

SCSS

$custom: #21288c;
$custom-light: #6f62af;
$custom-dark: #000000;

JSON

{
  "hex": "#21288c",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 140
  },
  "hsl": {
    "h": 236.075,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.34795,
    "c": 0.16197,
    "h": 271.4
  },
  "luminance": 0.03734
}

Semantic roles & 50–950 ramp

primary

#21288C

secondary

#B9B34F

accent

#DA43E5

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080510

muted

#7B797F

Preview Lab

Preview with #21288C

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

Preview Lab → · Contrast checker → · Palette generator →