#312AA4#312AA4

#312AA4 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.6% C 0.186 H 275.7°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#312AA4
RGB	rgb(49, 42, 164)
HSL	hsl(243, 59%, 40%)
HSV	hsv(243, 74%, 64%)
CMYK	cmyk(70.1%, 74.4%, 0%, 35.7%)
CIE-LAB	lab(26.70, 42.08, -64.18)
CIE-LCH	lch(26.70, 76.74, 303.25°)
OKLab	oklab(38.62% 0.0185 -0.1855)
OKLCH	oklch(38.62% 0.186 275.7)
XYZ	xyz(8.7932, 4.9884, 35.6142)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AA4 #9DA42A

analogous

#2A60A4 #312AA4 #6E2AA4

triadic

#312AA4 #A4312A #2AA431

tetradic

#312AA4 #A42A60 #9DA42A #2AA46E

square

#312AA4 #A42A60 #9DA42A #2AA46E

split-complementary

#312AA4 #A46E2A #60A42A

monochromatic

#141143 #221E73 #312AA4 #463ECD #756EDA

Accessibility & contrast

On white

10.51

#312AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#312AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AA4

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AA4	#FFFFFF	#000000	##FFFFFF
##312AA4	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A8

Deuteranopia (green-blind)

#003AA2

Tritanopia (blue-blind)

#004D65

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #312aa4;
/* rgb */ color: rgb(49, 42, 164);
/* oklch */ color: oklch(38.6% 0.186 275.7);

Tailwind

colors: {
  custom: {
    50: '#7a65c0',
    500: '#312aa4',
    950: '#000000',
  },
}

SCSS

$custom: #312aa4;
$custom-light: #7a65c0;
$custom-dark: #000000;

JSON

{
  "hex": "#312aa4",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 164
  },
  "hsl": {
    "h": 243.443,
    "s": 59.223,
    "l": 40.392
  },
  "oklch": {
    "l": 0.3862,
    "c": 0.18643,
    "h": 275.7
  },
  "luminance": 0.04989
}

Semantic roles & 50–950 ramp

primary

#312AA4

secondary

#BCC169

accent

#E245D9

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312AA4

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

Preview Lab → · Contrast checker → · Palette generator →