#312C90#312C90

#312C90 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.9% C 0.159 H 277.5°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#312C90
RGB	rgb(49, 44, 144)
HSL	hsl(243, 53%, 37%)
HSV	hsv(243, 69%, 56%)
CMYK	cmyk(66%, 69.4%, 0%, 43.5%)
CIE-LAB	lab(25.16, 34.14, -54.47)
CIE-LCH	lch(25.16, 64.29, 302.08°)
OKLab	oklab(36.92% 0.0206 -0.1572)
OKLCH	oklch(36.92% 0.159 277.5)
XYZ	xyz(7.1997, 4.4674, 26.8630)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312C90 #8B902C

analogous

#2C5990 #312C90 #632C90

triadic

#312C90 #90312C #2C9031

tetradic

#312C90 #902C59 #8B902C #2C9063

square

#312C90 #902C59 #8B902C #2C9063

split-complementary

#312C90 #90632C #59902C

monochromatic

#110F32 #211E61 #312C90 #413ABF #6B66D0

Accessibility & contrast

On white

11.09

#312C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#312C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312C90

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312C90	#FFFFFF	#000000	##FFFFFF
##312C90	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004093

Deuteranopia (green-blind)

#00378E

Tritanopia (blue-blind)

#00475A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312c90;
/* rgb */ color: rgb(49, 44, 144);
/* oklch */ color: oklch(36.9% 0.159 277.5);

Tailwind

colors: {
  custom: {
    50: '#7666b1',
    500: '#312c90',
    950: '#000000',
  },
}

SCSS

$custom: #312c90;
$custom-light: #7666b1;
$custom-dark: #000000;

JSON

{
  "hex": "#312c90",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 144
  },
  "hsl": {
    "h": 243,
    "s": 53.191,
    "l": 36.863
  },
  "oklch": {
    "l": 0.3692,
    "c": 0.15851,
    "h": 277.5
  },
  "luminance": 0.04468
}

Semantic roles & 50–950 ramp

primary

#312C90

secondary

#B2B761

accent

#DD4BD5

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312C90

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

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