#312D8A#312D8A

#312D8A is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.5% C 0.149 H 277.9°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#312D8A
RGB	rgb(49, 45, 138)
HSL	hsl(243, 51%, 36%)
HSV	hsv(243, 67%, 54%)
CMYK	cmyk(64.5%, 67.4%, 0%, 45.9%)
CIE-LAB	lab(24.84, 31.44, -51.27)
CIE-LCH	lch(24.84, 60.14, 301.52°)
OKLab	oklab(36.52% 0.0206 -0.1478)
OKLCH	oklch(36.52% 0.149 277.9)
XYZ	xyz(6.7910, 4.3642, 24.5243)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D8A #868A2D

analogous

#2D578A #312D8A #5F2D8A

triadic

#312D8A #8A312D #2D8A31

tetradic

#312D8A #8A2D57 #868A2D #2D8A5F

square

#312D8A #8A2D57 #868A2D #2D8A5F

split-complementary

#312D8A #8A5F2D #578A2D

monochromatic

#100F2E #211E5C #312D8A #413CB8 #6965CD

Accessibility & contrast

On white

11.21

#312D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#312D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D8A

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D8A	#FFFFFF	#000000	##FFFFFF
##312D8A	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8D

Deuteranopia (green-blind)

#003788

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #312d8a;
/* rgb */ color: rgb(49, 45, 138);
/* oklch */ color: oklch(36.5% 0.149 277.9);

Tailwind

colors: {
  custom: {
    50: '#7466ad',
    500: '#312d8a',
    950: '#000000',
  },
}

SCSS

$custom: #312d8a;
$custom-light: #7466ad;
$custom-dark: #000000;

JSON

{
  "hex": "#312d8a",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 138
  },
  "hsl": {
    "h": 242.581,
    "s": 50.82,
    "l": 35.882
  },
  "oklch": {
    "l": 0.36519,
    "c": 0.14921,
    "h": 277.9
  },
  "luminance": 0.04365
}

Semantic roles & 50–950 ramp

primary

#312D8A

secondary

#B0B360

accent

#DA4DD4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312D8A

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

Preview Lab → · Contrast checker → · Palette generator →