#21237E#21237E

#21237E is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.5% C 0.149 H 273.4°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#21237E
RGB	rgb(33, 35, 126)
HSL	hsl(239, 58%, 31%)
HSV	hsv(239, 74%, 49%)
CMYK	cmyk(73.8%, 72.2%, 0%, 50.6%)
CIE-LAB	lab(20.17, 31.36, -51.44)
CIE-LCH	lch(20.17, 60.24, 301.37°)
OKLab	oklab(32.49% 0.0089 -0.1487)
OKLCH	oklch(32.49% 0.149 273.4)
XYZ	xyz(4.9929, 3.0313, 20.0566)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21237E #7E7C21

analogous

#21517E #21237E #4D217E

triadic

#21237E #7E2123 #237E21

tetradic

#21237E #7E2151 #7E7C21 #217E4D

square

#21237E #7E2151 #7E7C21 #217E4D

split-complementary

#21237E #7E4D21 #517E21

monochromatic

#08081D #14164E #21237E #2E30AE #4A4DD0

Accessibility & contrast

On white

13.07

#21237E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#21237E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21237E

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21237E	#FFFFFF	#000000	##FFFFFF
##21237E	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003581

Deuteranopia (green-blind)

#002C7C

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #21237e;
/* rgb */ color: rgb(33, 35, 126);
/* oklch */ color: oklch(32.5% 0.149 273.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#21237e",
  "rgb": {
    "r": 33,
    "g": 35,
    "b": 126
  },
  "hsl": {
    "h": 238.71,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32488,
    "c": 0.149,
    "h": 273.4
  },
  "luminance": 0.03032
}

Semantic roles & 50–950 ramp

primary

#21237E

secondary

#B1AF4A

accent

#DE46E2

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #21237E

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

Preview Lab → · Contrast checker → · Palette generator →