#312AB5#312AB5

#312AB5 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.4% C 0.207 H 274.1°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#312AB5
RGB	rgb(49, 42, 181)
HSL	hsl(243, 62%, 44%)
HSV	hsv(243, 77%, 71%)
CMYK	cmyk(72.9%, 76.8%, 0%, 29%)
CIE-LAB	lab(28.50, 47.60, -71.42)
CIE-LCH	lch(28.50, 85.83, 303.68°)
OKLab	oklab(40.42% 0.015 -0.2066)
OKLCH	oklch(40.42% 0.207 274.1)
XYZ	xyz(10.4323, 5.6441, 44.2467)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AB5 #AEB52A

analogous

#2A68B5 #312AB5 #762AB5

triadic

#312AB5 #B5312A #2AB531

tetradic

#312AB5 #B52A68 #AEB52A #2AB576

square

#312AB5 #B52A68 #AEB52A #2AB576

split-complementary

#312AB5 #B5762A #68B52A

monochromatic

#161352 #241E83 #312AB5 #4F48D4 #7F79E0

Accessibility & contrast

On white

9.86

#312AB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#312AB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AB5

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AB5	#FFFFFF	#000000	##FFFFFF
##312AB5	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB9

Deuteranopia (green-blind)

#003DB3

Tritanopia (blue-blind)

#00536E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312ab5;
/* rgb */ color: rgb(49, 42, 181);
/* oklch */ color: oklch(40.4% 0.207 274.1);

Tailwind

colors: {
  custom: {
    50: '#7e66cd',
    500: '#312ab5',
    950: '#000000',
  },
}

SCSS

$custom: #312ab5;
$custom-light: #7e66cd;
$custom-dark: #000000;

JSON

{
  "hex": "#312ab5",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 181
  },
  "hsl": {
    "h": 243.022,
    "s": 62.332,
    "l": 43.725
  },
  "oklch": {
    "l": 0.4042,
    "c": 0.20714,
    "h": 274.1
  },
  "luminance": 0.05645
}

Semantic roles & 50–950 ramp

primary

#312AB5

secondary

#C4C873

accent

#E542DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312AB5

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

Preview Lab → · Contrast checker → · Palette generator →