#312F90#312F90

#312F90 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.4% C 0.155 H 276.8°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#312F90
RGB	rgb(49, 47, 144)
HSL	hsl(241, 51%, 37%)
HSV	hsv(241, 67%, 56%)
CMYK	cmyk(66%, 67.4%, 0%, 43.5%)
CIE-LAB	lab(25.86, 32.26, -53.33)
CIE-LCH	lch(25.86, 62.32, 301.17°)
OKLab	oklab(37.43% 0.0183 -0.1538)
OKLCH	oklch(37.43% 0.155 276.8)
XYZ	xyz(7.3155, 4.6990, 26.9016)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312F90 #8E902F

analogous

#2F5E90 #312F90 #612F90

triadic

#312F90 #90312F #2F9031

tetradic

#312F90 #902F5E #8E902F #2F9061

square

#312F90 #902F5E #8E902F #2F9061

split-complementary

#312F90 #90612F #5E902F

monochromatic

#121134 #212062 #312F90 #413EBE #6D6BCF

Accessibility & contrast

On white

10.82

#312F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#312F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312F90

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312F90	#FFFFFF	#000000	##FFFFFF
##312F90	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004193

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#00485B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #312f90;
/* rgb */ color: rgb(49, 47, 144);
/* oklch */ color: oklch(37.4% 0.155 276.8);

Tailwind

colors: {
  custom: {
    50: '#7568b1',
    500: '#312f90',
    950: '#000000',
  },
}

SCSS

$custom: #312f90;
$custom-light: #7568b1;
$custom-dark: #000000;

JSON

{
  "hex": "#312f90",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 144
  },
  "hsl": {
    "h": 241.237,
    "s": 50.785,
    "l": 37.451
  },
  "oklch": {
    "l": 0.37426,
    "c": 0.15488,
    "h": 276.8
  },
  "luminance": 0.047
}

Semantic roles & 50–950 ramp

primary

#312F90

secondary

#B4B665

accent

#DA4ED7

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312F90

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

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