#371FD2#371FD2

#371FD2 is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.9% C 0.247 H 274.4°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#371FD2
RGB	rgb(55, 31, 210)
HSL	hsl(248, 74%, 47%)
HSV	hsv(248, 85%, 82%)
CMYK	cmyk(73.8%, 85.2%, 0%, 17.6%)
CIE-LAB	lab(30.51, 61.67, -85.13)
CIE-LCH	lch(30.51, 105.12, 305.92°)
OKLab	oklab(42.88% 0.0189 -0.246)
OKLCH	oklch(42.88% 0.247 274.4)
XYZ	xyz(13.6945, 6.4439, 61.4824)
Luminance	0.0644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371FD2 #BAD21F

analogous

#1F60D2 #371FD2 #911FD2

triadic

#371FD2 #D2371F #1FD237

tetradic

#371FD2 #D21F60 #BAD21F #1FD291

square

#371FD2 #D21F60 #BAD21F #1FD291

split-complementary

#371FD2 #D2911F #60D21F

monochromatic

#1B0F67 #29179D #371FD2 #5F4AE4 #8E7FEC

Accessibility & contrast

On white

9.17

#371FD2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#371FD2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371FD2

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371FD2	#FFFFFF	#000000	##FFFFFF
##371FD2	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FD7

Deuteranopia (green-blind)

#003FCF

Tritanopia (blue-blind)

#005B7D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #371fd2;
/* rgb */ color: rgb(55, 31, 210);
/* oklch */ color: oklch(42.9% 0.247 274.4);

Tailwind

colors: {
  custom: {
    50: '#8863e1',
    500: '#371fd2',
    950: '#000000',
  },
}

SCSS

$custom: #371fd2;
$custom-light: #8863e1;
$custom-dark: #000000;

JSON

{
  "hex": "#371fd2",
  "rgb": {
    "r": 55,
    "g": 31,
    "b": 210
  },
  "hsl": {
    "h": 248.045,
    "s": 74.274,
    "l": 47.255
  },
  "oklch": {
    "l": 0.42877,
    "c": 0.24677,
    "h": 274.4
  },
  "luminance": 0.06445
}

Semantic roles & 50–950 ramp

primary

#371FD2

secondary

#C8D478

accent

#F137D8

background

#F9F6FE

surface

#F2EBFC

border

#CCC6D5

text

#0E0616

muted

#7E7A84

Preview Lab

Preview with #371FD2

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

Preview Lab → · Contrast checker → · Palette generator →