#371DBC#371DBC

#371DBC is a dark, highly saturated blue. Relative luminance 0.053; OKLCH L 40.2% C 0.224 H 276.7°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#371DBC
RGB	rgb(55, 29, 188)
HSL	hsl(250, 73%, 43%)
HSV	hsv(250, 85%, 74%)
CMYK	cmyk(70.7%, 84.6%, 0%, 26.3%)
CIE-LAB	lab(27.63, 56.26, -77.00)
CIE-LCH	lch(27.63, 95.36, 306.15°)
OKLab	oklab(40.16% 0.0262 -0.2225)
OKLCH	oklch(40.16% 0.224 276.7)
XYZ	xyz(11.0891, 5.3208, 48.0098)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371DBC #A2BC1D

analogous

#1D53BC #371DBC #861DBC

triadic

#371DBC #BC371D #1DBC37

tetradic

#371DBC #BC1D53 #A2BC1D #1DBC86

square

#371DBC #BC1D53 #A2BC1D #1DBC86

split-complementary

#371DBC #BC861D #53BC1D

monochromatic

#180D52 #271587 #371DBC #5236E0 #806BE8

Accessibility & contrast

On white

10.17

#371DBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#371DBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371DBC

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371DBC	#FFFFFF	#000000	##FFFFFF
##371DBC	1.00	10.17	2.06	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048C0

Deuteranopia (green-blind)

#003AB9

Tritanopia (blue-blind)

#005170

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #371dbc;
/* rgb */ color: rgb(55, 29, 188);
/* oklch */ color: oklch(40.2% 0.224 276.7);

Tailwind

colors: {
  custom: {
    50: '#8360d2',
    500: '#371dbc',
    950: '#000000',
  },
}

SCSS

$custom: #371dbc;
$custom-light: #8360d2;
$custom-dark: #000000;

JSON

{
  "hex": "#371dbc",
  "rgb": {
    "r": 55,
    "g": 29,
    "b": 188
  },
  "hsl": {
    "h": 249.811,
    "s": 73.272,
    "l": 42.549
  },
  "oklch": {
    "l": 0.4016,
    "c": 0.224,
    "h": 276.7
  },
  "luminance": 0.05322
}

Semantic roles & 50–950 ramp

primary

#371DBC

secondary

#BDCE67

accent

#F038D2

background

#F8F5FD

surface

#F0EAFA

border

#CBC6D3

text

#0D0514

muted

#7D7983

Preview Lab

Preview with #371DBC

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

Preview Lab → · Contrast checker → · Palette generator →