#312AB4#312AB4

#312AB4 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.3% C 0.206 H 274.2°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#312AB4
RGB	rgb(49, 42, 180)
HSL	hsl(243, 62%, 44%)
HSV	hsv(243, 77%, 71%)
CMYK	cmyk(72.8%, 76.7%, 0%, 29.4%)
CIE-LAB	lab(28.39, 47.28, -71.00)
CIE-LCH	lch(28.39, 85.31, 303.66°)
OKLab	oklab(40.31% 0.0152 -0.2054)
OKLCH	oklch(40.31% 0.206 274.2)
XYZ	xyz(10.3301, 5.6032, 43.7083)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AB4 #ADB42A

analogous

#2A68B4 #312AB4 #762AB4

triadic

#312AB4 #B4312A #2AB431

tetradic

#312AB4 #B42A68 #ADB42A #2AB476

square

#312AB4 #B42A68 #ADB42A #2AB476

split-complementary

#312AB4 #B4762A #68B42A

monochromatic

#161351 #231E82 #312AB4 #4E47D4 #7E79E0

Accessibility & contrast

On white

9.90

#312AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#312AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AB4

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AB4	#FFFFFF	#000000	##FFFFFF
##312AB4	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B8

Deuteranopia (green-blind)

#003CB2

Tritanopia (blue-blind)

#00536E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312ab4;
/* rgb */ color: rgb(49, 42, 180);
/* oklch */ color: oklch(40.3% 0.206 274.2);

Tailwind

colors: {
  custom: {
    50: '#7e66cc',
    500: '#312ab4',
    950: '#000000',
  },
}

SCSS

$custom: #312ab4;
$custom-light: #7e66cc;
$custom-dark: #000000;

JSON

{
  "hex": "#312ab4",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 180
  },
  "hsl": {
    "h": 243.043,
    "s": 62.162,
    "l": 43.529
  },
  "oklch": {
    "l": 0.40313,
    "c": 0.20594,
    "h": 274.2
  },
  "luminance": 0.05604
}

Semantic roles & 50–950 ramp

primary

#312AB4

secondary

#C3C872

accent

#E543DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312AB4

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

Preview Lab → · Contrast checker → · Palette generator →