#312F89#312F89

#312F89 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.8% C 0.145 H 277.5°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#312F89
RGB	rgb(49, 47, 137)
HSL	hsl(241, 49%, 36%)
HSV	hsv(241, 66%, 54%)
CMYK	cmyk(64.2%, 65.7%, 0%, 46.3%)
CIE-LAB	lab(25.23, 29.80, -50.01)
CIE-LCH	lch(25.23, 58.21, 300.80°)
OKLab	oklab(36.78% 0.0189 -0.1441)
OKLCH	oklch(36.78% 0.145 277.5)
XYZ	xyz(6.7970, 4.4916, 24.1708)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312F89 #87892F

analogous

#2F5A89 #312F89 #5E2F89

triadic

#312F89 #89312F #2F8931

tetradic

#312F89 #892F5A #87892F #2F895E

square

#312F89 #892F5A #87892F #2F895E

split-complementary

#312F89 #895E2F #5A892F

monochromatic

#10102E #211F5B #312F89 #413FB7 #6A67CB

Accessibility & contrast

On white

11.06

#312F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#312F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312F89

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312F89	#FFFFFF	#000000	##FFFFFF
##312F89	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408C

Deuteranopia (green-blind)

#003887

Tritanopia (blue-blind)

#004657

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312f89;
/* rgb */ color: rgb(49, 47, 137);
/* oklch */ color: oklch(36.8% 0.145 277.5);

Tailwind

colors: {
  custom: {
    50: '#7468ac',
    500: '#312f89',
    950: '#000000',
  },
}

SCSS

$custom: #312f89;
$custom-light: #7468ac;
$custom-dark: #000000;

JSON

{
  "hex": "#312f89",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 137
  },
  "hsl": {
    "h": 241.333,
    "s": 48.913,
    "l": 36.078
  },
  "oklch": {
    "l": 0.36778,
    "c": 0.1453,
    "h": 277.5
  },
  "luminance": 0.04492
}

Semantic roles & 50–950 ramp

primary

#312F89

secondary

#B0B262

accent

#D84FD5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312F89

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

Preview Lab → · Contrast checker → · Palette generator →