#312CA4#312CA4

#312CA4 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.9% C 0.184 H 275.4°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#312CA4
RGB	rgb(49, 44, 164)
HSL	hsl(243, 58%, 41%)
HSV	hsv(243, 73%, 64%)
CMYK	cmyk(70.1%, 73.2%, 0%, 35.7%)
CIE-LAB	lab(27.11, 40.93, -63.50)
CIE-LCH	lch(27.11, 75.55, 302.80°)
OKLab	oklab(38.91% 0.0174 -0.1835)
OKLCH	oklch(38.91% 0.184 275.4)
XYZ	xyz(8.8659, 5.1338, 35.6385)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312CA4 #9FA42C

analogous

#2C63A4 #312CA4 #6D2CA4

triadic

#312CA4 #A4312C #2CA431

tetradic

#312CA4 #A42C63 #9FA42C #2CA46D

square

#312CA4 #A42C63 #9FA42C #2CA46D

split-complementary

#312CA4 #A46D2C #63A42C

monochromatic

#141243 #231F74 #312CA4 #4741CC #7671D9

Accessibility & contrast

On white

10.36

#312CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#312CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312CA4

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312CA4	#FFFFFF	#000000	##FFFFFF
##312CA4	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A8

Deuteranopia (green-blind)

#003BA2

Tritanopia (blue-blind)

#004E65

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #312ca4;
/* rgb */ color: rgb(49, 44, 164);
/* oklch */ color: oklch(38.9% 0.184 275.4);

Tailwind

colors: {
  custom: {
    50: '#7a67c0',
    500: '#312ca4',
    950: '#000000',
  },
}

SCSS

$custom: #312ca4;
$custom-light: #7a67c0;
$custom-dark: #000000;

JSON

{
  "hex": "#312ca4",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 164
  },
  "hsl": {
    "h": 242.5,
    "s": 57.692,
    "l": 40.784
  },
  "oklch": {
    "l": 0.38912,
    "c": 0.18436,
    "h": 275.4
  },
  "luminance": 0.05135
}

Semantic roles & 50–950 ramp

primary

#312CA4

secondary

#BDC06B

accent

#E147DB

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312CA4

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

Preview Lab → · Contrast checker → · Palette generator →