#312D9D#312D9D

#312D9D is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.4% C 0.174 H 275.9°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#312D9D
RGB	rgb(49, 45, 157)
HSL	hsl(242, 55%, 40%)
HSV	hsv(242, 71%, 62%)
CMYK	cmyk(68.8%, 71.3%, 0%, 38.4%)
CIE-LAB	lab(26.63, 37.98, -60.04)
CIE-LCH	lch(26.63, 71.04, 302.31°)
OKLab	oklab(38.36% 0.018 -0.1734)
OKLCH	oklch(38.36% 0.174 275.9)
XYZ	xyz(8.2888, 4.9633, 32.4130)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D9D #999D2D

analogous

#2D619D #312D9D #692D9D

triadic

#312D9D #9D312D #2D9D31

tetradic

#312D9D #9D2D61 #999D2D #2D9D69

square

#312D9D #9D2D61 #999D2D #2D9D69

split-complementary

#312D9D #9D692D #619D2D

monochromatic

#13123E #221F6D #312D9D #443FC8 #726FD6

Accessibility & contrast

On white

10.54

#312D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#312D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D9D

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D9D	#FFFFFF	#000000	##FFFFFF
##312D9D	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A0

Deuteranopia (green-blind)

#003A9B

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #312d9d;
/* rgb */ color: rgb(49, 45, 157);
/* oklch */ color: oklch(38.4% 0.174 275.9);

Tailwind

colors: {
  custom: {
    50: '#7867bb',
    500: '#312d9d',
    950: '#000000',
  },
}

SCSS

$custom: #312d9d;
$custom-light: #7867bb;
$custom-dark: #000000;

JSON

{
  "hex": "#312d9d",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 157
  },
  "hsl": {
    "h": 242.143,
    "s": 55.446,
    "l": 39.608
  },
  "oklch": {
    "l": 0.38357,
    "c": 0.17438,
    "h": 275.9
  },
  "luminance": 0.04964
}

Semantic roles & 50–950 ramp

primary

#312D9D

secondary

#BABD69

accent

#DF49D9

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #312D9D

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

Preview Lab → · Contrast checker → · Palette generator →