#312C91#312C91

#312C91 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.0% C 0.160 H 277.4°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#312C91
RGB	rgb(49, 44, 145)
HSL	hsl(243, 53%, 37%)
HSV	hsv(243, 70%, 57%)
CMYK	cmyk(66.2%, 69.7%, 0%, 43.1%)
CIE-LAB	lab(25.25, 34.49, -54.94)
CIE-LCH	lch(25.25, 64.86, 302.12°)
OKLab	oklab(37.02% 0.0205 -0.1585)
OKLCH	oklch(37.02% 0.16 277.4)
XYZ	xyz(7.2765, 4.4981, 27.2673)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312C91 #8C912C

analogous

#2C5A91 #312C91 #632C91

triadic

#312C91 #91312C #2C9131

tetradic

#312C91 #912C5A #8C912C #2C9163

square

#312C91 #912C5A #8C912C #2C9163

split-complementary

#312C91 #91632C #5A912C

monochromatic

#111033 #211E62 #312C91 #413AC0 #6C67D1

Accessibility & contrast

On white

11.05

#312C91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#312C91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312C91

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312C91	#FFFFFF	#000000	##FFFFFF
##312C91	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004094

Deuteranopia (green-blind)

#00388F

Tritanopia (blue-blind)

#00475B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312c91;
/* rgb */ color: rgb(49, 44, 145);
/* oklch */ color: oklch(37.0% 0.160 277.4);

Tailwind

colors: {
  custom: {
    50: '#7666b2',
    500: '#312c91',
    950: '#000000',
  },
}

SCSS

$custom: #312c91;
$custom-light: #7666b2;
$custom-dark: #000000;

JSON

{
  "hex": "#312c91",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 145
  },
  "hsl": {
    "h": 242.97,
    "s": 53.439,
    "l": 37.059
  },
  "oklch": {
    "l": 0.37016,
    "c": 0.15984,
    "h": 277.4
  },
  "luminance": 0.04499
}

Semantic roles & 50–950 ramp

primary

#312C91

secondary

#B3B762

accent

#DD4BD6

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0611

muted

#7C7A80

Preview Lab

Preview with #312C91

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

Preview Lab → · Contrast checker → · Palette generator →