#21257D#21257D

#21257D is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.7% C 0.145 H 273.1°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#21257D
RGB	rgb(33, 37, 125)
HSL	hsl(237, 58%, 31%)
HSV	hsv(237, 74%, 49%)
CMYK	cmyk(73.6%, 70.4%, 0%, 51%)
CIE-LAB	lab(20.54, 29.70, -50.19)
CIE-LCH	lch(20.54, 58.31, 300.61°)
OKLab	oklab(32.73% 0.0077 -0.1451)
OKLCH	oklch(32.73% 0.145 273.1)
XYZ	xyz(4.9892, 3.1266, 19.7386)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21257D #7D7921

analogous

#21537D #21257D #4B217D

triadic

#21257D #7D2125 #257D21

tetradic

#21257D #7D2153 #7D7921 #217D4B

square

#21257D #7D2153 #7D7921 #217D4B

split-complementary

#21257D #7D4B21 #537D21

monochromatic

#07081C #14174D #21257D #2E33AD #494FCF

Accessibility & contrast

On white

12.92

#21257D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#21257D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21257D

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21257D	#FFFFFF	#000000	##FFFFFF
##21257D	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003680

Deuteranopia (green-blind)

#002D7B

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #21257d;
/* rgb */ color: rgb(33, 37, 125);
/* oklch */ color: oklch(32.7% 0.145 273.1);

Tailwind

colors: {
  custom: {
    50: '#6b60a4',
    500: '#21257d',
    950: '#000000',
  },
}

SCSS

$custom: #21257d;
$custom-light: #6b60a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21257d",
  "rgb": {
    "r": 33,
    "g": 37,
    "b": 125
  },
  "hsl": {
    "h": 237.391,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32728,
    "c": 0.14528,
    "h": 273.1
  },
  "luminance": 0.03127
}

Semantic roles & 50–950 ramp

primary

#21257D

secondary

#B0AB4A

accent

#DB46E1

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08050F

muted

#7A797F

Preview Lab

Preview with #21257D

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

Preview Lab → · Contrast checker → · Palette generator →