#21289D#21289D

#21289D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.6% C 0.184 H 270.5°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#21289D
RGB	rgb(33, 40, 157)
HSL	hsl(237, 65%, 37%)
HSV	hsv(237, 79%, 62%)
CMYK	cmyk(79%, 74.5%, 0%, 38.4%)
CIE-LAB	lab(24.56, 39.35, -63.49)
CIE-LCH	lch(24.56, 74.69, 301.79°)
OKLab	oklab(36.61% 0.0016 -0.1839)
OKLCH	oklch(36.61% 0.184 270.5)
XYZ	xyz(7.4697, 4.2744, 32.3231)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21289D #9D9621

analogous

#21669D #21289D #58219D

triadic

#21289D #9D2128 #289D21

tetradic

#21289D #9D2166 #9D9621 #219D58

square

#21289D #9D2166 #9D9621 #219D58

split-complementary

#21289D #9D5821 #669D21

monochromatic

#0C0E38 #161B6A #21289D #2C35D0 #5C63DD

Accessibility & contrast

On white

11.32

#21289D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#21289D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21289D

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21289D	#FFFFFF	#000000	##FFFFFF
##21289D	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A0

Deuteranopia (green-blind)

#00349B

Tritanopia (blue-blind)

#004A60

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #21289d;
/* rgb */ color: rgb(33, 40, 157);
/* oklch */ color: oklch(36.6% 0.184 270.5);

Tailwind

colors: {
  custom: {
    50: '#7363bb',
    500: '#21289d',
    950: '#000000',
  },
}

SCSS

$custom: #21289d;
$custom-light: #7363bb;
$custom-dark: #000000;

JSON

{
  "hex": "#21289d",
  "rgb": {
    "r": 33,
    "g": 40,
    "b": 157
  },
  "hsl": {
    "h": 236.613,
    "s": 65.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36612,
    "c": 0.18387,
    "h": 270.5
  },
  "luminance": 0.04275
}

Semantic roles & 50–950 ramp

primary

#21289D

secondary

#C1BB59

accent

#DF40E8

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #21289D

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

Preview Lab → · Contrast checker → · Palette generator →