#312CA3#312CA3

#312CA3 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.8% C 0.183 H 275.5°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#312CA3
RGB	rgb(49, 44, 163)
HSL	hsl(243, 57%, 41%)
HSV	hsv(243, 73%, 64%)
CMYK	cmyk(69.9%, 73%, 0%, 36.1%)
CIE-LAB	lab(27.01, 40.59, -63.06)
CIE-LCH	lch(27.01, 75.00, 302.77°)
OKLab	oklab(38.81% 0.0176 -0.1823)
OKLCH	oklch(38.81% 0.183 275.5)
XYZ	xyz(8.7760, 5.0979, 35.1647)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312CA3 #9EA32C

analogous

#2C62A3 #312CA3 #6C2CA3

triadic

#312CA3 #A3312C #2CA331

tetradic

#312CA3 #A32C62 #9EA32C #2CA36C

square

#312CA3 #A32C62 #9EA32C #2CA36C

split-complementary

#312CA3 #A36C2C #62A32C

monochromatic

#141243 #231F73 #312CA3 #4641CC #7571D9

Accessibility & contrast

On white

10.40

#312CA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#312CA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312CA3

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312CA3	#FFFFFF	#000000	##FFFFFF
##312CA3	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A7

Deuteranopia (green-blind)

#003AA1

Tritanopia (blue-blind)

#004D65

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #312ca3;
/* rgb */ color: rgb(49, 44, 163);
/* oklch */ color: oklch(38.8% 0.183 275.5);

Tailwind

colors: {
  custom: {
    50: '#7a67bf',
    500: '#312ca3',
    950: '#000000',
  },
}

SCSS

$custom: #312ca3;
$custom-light: #7a67bf;
$custom-dark: #000000;

JSON

{
  "hex": "#312ca3",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 163
  },
  "hsl": {
    "h": 242.521,
    "s": 57.488,
    "l": 40.588
  },
  "oklch": {
    "l": 0.38809,
    "c": 0.1831,
    "h": 275.5
  },
  "luminance": 0.05099
}

Semantic roles & 50–950 ramp

primary

#312CA3

secondary

#BCC06B

accent

#E147DA

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312CA3

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

Preview Lab → · Contrast checker → · Palette generator →