#312F84#312F84

#312F84 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.138 H 278.0°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#312F84
RGB	rgb(49, 47, 132)
HSL	hsl(241, 47%, 35%)
HSV	hsv(241, 64%, 52%)
CMYK	cmyk(62.9%, 64.4%, 0%, 48.2%)
CIE-LAB	lab(24.80, 28.04, -47.59)
CIE-LCH	lch(24.80, 55.24, 300.51°)
OKLab	oklab(36.33% 0.0193 -0.137)
OKLCH	oklch(36.33% 0.138 278)
XYZ	xyz(6.4467, 4.3515, 22.3255)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312F84 #82842F

analogous

#2F5784 #312F84 #5C2F84

triadic

#312F84 #84312F #2F8431

tetradic

#312F84 #842F57 #82842F #2F845C

square

#312F84 #842F57 #82842F #2F845C

split-complementary

#312F84 #845C2F #57842F

monochromatic

#0F0F2A #201F57 #312F84 #423FB1 #6865C8

Accessibility & contrast

On white

11.23

#312F84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#312F84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312F84

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312F84	#FFFFFF	#000000	##FFFFFF
##312F84	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E87

Deuteranopia (green-blind)

#003782

Tritanopia (blue-blind)

#004455

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #312f84;
/* rgb */ color: rgb(49, 47, 132);
/* oklch */ color: oklch(36.3% 0.138 278.0);

Tailwind

colors: {
  custom: {
    50: '#7368a9',
    500: '#312f84',
    950: '#000000',
  },
}

SCSS

$custom: #312f84;
$custom-light: #7368a9;
$custom-dark: #000000;

JSON

{
  "hex": "#312f84",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 132
  },
  "hsl": {
    "h": 241.412,
    "s": 47.486,
    "l": 35.098
  },
  "oklch": {
    "l": 0.36326,
    "c": 0.13832,
    "h": 278
  },
  "luminance": 0.04352
}

Semantic roles & 50–950 ramp

primary

#312F84

secondary

#ADAF60

accent

#D751D4

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #312F84

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

Preview Lab → · Contrast checker → · Palette generator →