#31338D#31338D

#31338D is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.146 H 275.9°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#31338D
RGB	rgb(49, 51, 141)
HSL	hsl(239, 48%, 37%)
HSV	hsv(239, 65%, 55%)
CMYK	cmyk(65.2%, 63.8%, 0%, 44.7%)
CIE-LAB	lab(26.57, 28.61, -50.31)
CIE-LCH	lch(26.57, 57.87, 299.63°)
OKLab	oklab(37.86% 0.0151 -0.1449)
OKLCH	oklch(37.86% 0.146 275.9)
XYZ	xyz(7.2566, 4.9431, 25.7658)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31338D #8D8B31

analogous

#31618D #31338D #5D318D

triadic

#31338D #8D3133 #338D31

tetradic

#31338D #8D3161 #8D8B31 #318D5D

square

#31338D #8D3161 #8D8B31 #318D5D

split-complementary

#31338D #8D5D31 #618D31

monochromatic

#111232 #212360 #31338D #4143BA #6C6ECC

Accessibility & contrast

On white

10.56

#31338D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#31338D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31338D

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31338D	#FFFFFF	#000000	##FFFFFF
##31338D	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004390

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004A5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31338d;
/* rgb */ color: rgb(49, 51, 141);
/* oklch */ color: oklch(37.9% 0.146 275.9);

Tailwind

colors: {
  custom: {
    50: '#746baf',
    500: '#31338d',
    950: '#000000',
  },
}

SCSS

$custom: #31338d;
$custom-light: #746baf;
$custom-dark: #000000;

JSON

{
  "hex": "#31338d",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 141
  },
  "hsl": {
    "h": 238.696,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.37864,
    "c": 0.1457,
    "h": 275.9
  },
  "luminance": 0.04944
}

Semantic roles & 50–950 ramp

primary

#31338D

secondary

#B4B266

accent

#D550D8

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #31338D

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

Preview Lab → · Contrast checker → · Palette generator →