#21237D#21237D

#21237D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.4% C 0.148 H 273.5°. Best body text is #FFFFFF at 13.12:1 contrast (WCAG AA passes).

Color values

HEX	#21237D
RGB	rgb(33, 35, 125)
HSL	hsl(239, 58%, 31%)
HSV	hsv(239, 74%, 49%)
CMYK	cmyk(73.6%, 72%, 0%, 51%)
CIE-LAB	lab(20.07, 30.99, -50.97)
CIE-LCH	lch(20.07, 59.65, 301.30°)
OKLab	oklab(32.38% 0.0091 -0.1474)
OKLCH	oklch(32.38% 0.148 273.5)
XYZ	xyz(4.9287, 3.0056, 19.7185)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21237D #7D7B21

analogous

#21517D #21237D #4D217D

triadic

#21237D #7D2123 #237D21

tetradic

#21237D #7D2151 #7D7B21 #217D4D

square

#21237D #7D2151 #7D7B21 #217D4D

split-complementary

#21237D #7D4D21 #517D21

monochromatic

#07081C #14154D #21237D #2E31AD #494CCF

Accessibility & contrast

On white

13.12

#21237D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#21237D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21237D

13.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21237D	#FFFFFF	#000000	##FFFFFF
##21237D	1.00	13.12	1.60	13.12
#FFFFFF	13.12	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003580

Deuteranopia (green-blind)

#002C7B

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #21237d;
/* rgb */ color: rgb(33, 35, 125);
/* oklch */ color: oklch(32.4% 0.148 273.5);

Tailwind

colors: {
  custom: {
    50: '#6b5ea4',
    500: '#21237d',
    950: '#000000',
  },
}

SCSS

$custom: #21237d;
$custom-light: #6b5ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#21237d",
  "rgb": {
    "r": 33,
    "g": 35,
    "b": 125
  },
  "hsl": {
    "h": 238.696,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32383,
    "c": 0.14764,
    "h": 273.5
  },
  "luminance": 0.03006
}

Semantic roles & 50–950 ramp

primary

#21237D

secondary

#B0AE4A

accent

#DE46E1

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #21237D

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

Preview Lab → · Contrast checker → · Palette generator →