#312DA8#312DA8

#312DA8 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.5% C 0.188 H 274.9°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#312DA8
RGB	rgb(49, 45, 168)
HSL	hsl(242, 58%, 42%)
HSV	hsv(242, 73%, 66%)
CMYK	cmyk(70.8%, 73.2%, 0%, 34.1%)
CIE-LAB	lab(27.73, 41.68, -64.91)
CIE-LCH	lch(27.73, 77.14, 302.71°)
OKLab	oklab(39.47% 0.0161 -0.1876)
OKLCH	oklch(39.47% 0.188 274.9)
XYZ	xyz(9.2706, 5.3560, 37.5834)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312DA8 #A4A82D

analogous

#2D67A8 #312DA8 #6F2DA8

triadic

#312DA8 #A8312D #2DA831

tetradic

#312DA8 #A82D67 #A4A82D #2DA86F

square

#312DA8 #A82D67 #A4A82D #2DA86F

split-complementary

#312DA8 #A86F2D #67A82D

monochromatic

#151347 #232078 #312DA8 #4945CD #7975DA

Accessibility & contrast

On white

10.14

#312DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#312DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312DA8

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312DA8	#FFFFFF	#000000	##FFFFFF
##312DA8	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AC

Deuteranopia (green-blind)

#003CA6

Tritanopia (blue-blind)

#005068

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #312da8;
/* rgb */ color: rgb(49, 45, 168);
/* oklch */ color: oklch(39.5% 0.188 274.9);

Tailwind

colors: {
  custom: {
    50: '#7b67c3',
    500: '#312da8',
    950: '#000000',
  },
}

SCSS

$custom: #312da8;
$custom-light: #7b67c3;
$custom-dark: #000000;

JSON

{
  "hex": "#312da8",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 168
  },
  "hsl": {
    "h": 241.951,
    "s": 57.746,
    "l": 41.765
  },
  "oklch": {
    "l": 0.3947,
    "c": 0.18834,
    "h": 274.9
  },
  "luminance": 0.05357
}

Semantic roles & 50–950 ramp

primary

#312DA8

secondary

#BFC26F

accent

#E147DC

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312DA8

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

Preview Lab → · Contrast checker → · Palette generator →