#31209D#31209D

#31209D is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.5% C 0.187 H 277.8°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#31209D
RGB	rgb(49, 32, 157)
HSL	hsl(248, 66%, 37%)
HSV	hsv(248, 80%, 62%)
CMYK	cmyk(68.8%, 79.6%, 0%, 38.4%)
CIE-LAB	lab(24.06, 45.22, -64.27)
CIE-LCH	lch(24.06, 78.59, 305.13°)
OKLab	oklab(36.54% 0.0256 -0.1857)
OKLCH	oklch(36.54% 0.187 277.8)
XYZ	xyz(7.8670, 4.1196, 32.2723)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31209D #8C9D20

analogous

#204E9D #31209D #70209D

triadic

#31209D #9D3120 #209D31

tetradic

#31209D #9D204E #8C9D20 #209D70

square

#31209D #9D204E #8C9D20 #209D70

split-complementary

#31209D #9D7020 #4E9D20

monochromatic

#110B37 #21166A #31209D #412AD0 #6C5ADD

Accessibility & contrast

On white

11.51

#31209D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#31209D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31209D

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31209D	#FFFFFF	#000000	##FFFFFF
##31209D	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA0

Deuteranopia (green-blind)

#00349B

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #31209d;
/* rgb */ color: rgb(49, 32, 157);
/* oklch */ color: oklch(36.5% 0.187 277.8);

Tailwind

colors: {
  custom: {
    50: '#7a5fbb',
    500: '#31209d',
    950: '#000000',
  },
}

SCSS

$custom: #31209d;
$custom-light: #7a5fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#31209d",
  "rgb": {
    "r": 49,
    "g": 32,
    "b": 157
  },
  "hsl": {
    "h": 248.16,
    "s": 66.138,
    "l": 37.059
  },
  "oklch": {
    "l": 0.36541,
    "c": 0.18744,
    "h": 277.8
  },
  "luminance": 0.0412
}

Semantic roles & 50–950 ramp

primary

#31209D

secondary

#B3C157

accent

#E93FD2

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #31209D

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

Preview Lab → · Contrast checker → · Palette generator →