#312BB8#312BB8

#312BB8 is a dark, highly saturated blue. Relative luminance 0.058; OKLCH L 40.9% C 0.210 H 273.8°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#312BB8
RGB	rgb(49, 43, 184)
HSL	hsl(243, 62%, 45%)
HSV	hsv(243, 77%, 72%)
CMYK	cmyk(73.4%, 76.6%, 0%, 27.8%)
CIE-LAB	lab(29.01, 48.03, -72.36)
CIE-LCH	lch(29.01, 86.85, 303.57°)
OKLab	oklab(40.88% 0.0139 -0.2093)
OKLCH	oklch(40.88% 0.21 273.8)
XYZ	xyz(10.7793, 5.8403, 45.8973)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BB8 #B2B82B

analogous

#2B6CB8 #312BB8 #782BB8

triadic

#312BB8 #B8312B #2BB831

tetradic

#312BB8 #B82B6C #B2B82B #2BB878

square

#312BB8 #B82B6C #B2B82B #2BB878

split-complementary

#312BB8 #B8782B #6CB82B

monochromatic

#171455 #241F86 #312BB8 #514BD5 #817DE1

Accessibility & contrast

On white

9.69

#312BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#312BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BB8

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BB8	#FFFFFF	#000000	##FFFFFF
##312BB8	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBC

Deuteranopia (green-blind)

#003EB6

Tritanopia (blue-blind)

#005570

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #312bb8;
/* rgb */ color: rgb(49, 43, 184);
/* oklch */ color: oklch(40.9% 0.210 273.8);

Tailwind

colors: {
  custom: {
    50: '#7f67cf',
    500: '#312bb8',
    950: '#000000',
  },
}

SCSS

$custom: #312bb8;
$custom-light: #7f67cf;
$custom-dark: #000000;

JSON

{
  "hex": "#312bb8",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 184
  },
  "hsl": {
    "h": 242.553,
    "s": 62.115,
    "l": 44.51
  },
  "oklch": {
    "l": 0.40875,
    "c": 0.2098,
    "h": 273.8
  },
  "luminance": 0.05841
}

Semantic roles & 50–950 ramp

primary

#312BB8

secondary

#C5C976

accent

#E543DE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312BB8

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

Preview Lab → · Contrast checker → · Palette generator →