#312D83#312D83

#312D83 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.140 H 278.8°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#312D83
RGB	rgb(49, 45, 131)
HSL	hsl(243, 49%, 35%)
HSV	hsv(243, 66%, 51%)
CMYK	cmyk(62.6%, 65.6%, 0%, 48.6%)
CIE-LAB	lab(24.22, 29.00, -47.91)
CIE-LCH	lch(24.22, 56.00, 301.18°)
OKLab	oklab(35.87% 0.0213 -0.1379)
OKLCH	oklch(35.87% 0.14 278.8)
XYZ	xyz(6.3004, 4.1680, 21.9408)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D83 #7F832D

analogous

#2D5483 #312D83 #5C2D83

triadic

#312D83 #83312D #2D8331

tetradic

#312D83 #832D54 #7F832D #2D835C

square

#312D83 #832D54 #7F832D #2D835C

split-complementary

#312D83 #835C2D #54832D

monochromatic

#0F0E28 #201D55 #312D83 #423DB1 #6662C9

Accessibility & contrast

On white

11.45

#312D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#312D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D83

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D83	#FFFFFF	#000000	##FFFFFF
##312D83	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D86

Deuteranopia (green-blind)

#003681

Tritanopia (blue-blind)

#004353

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #312d83;
/* rgb */ color: rgb(49, 45, 131);
/* oklch */ color: oklch(35.9% 0.140 278.8);

Tailwind

colors: {
  custom: {
    50: '#7366a8',
    500: '#312d83',
    950: '#000000',
  },
}

SCSS

$custom: #312d83;
$custom-light: #7366a8;
$custom-dark: #000000;

JSON

{
  "hex": "#312d83",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 131
  },
  "hsl": {
    "h": 242.791,
    "s": 48.864,
    "l": 34.51
  },
  "oklch": {
    "l": 0.35874,
    "c": 0.13955,
    "h": 278.8
  },
  "luminance": 0.04168
}

Semantic roles & 50–950 ramp

primary

#312D83

secondary

#ABAF5C

accent

#D84FD2

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312D83

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

Preview Lab → · Contrast checker → · Palette generator →