#373FC6#373FC6

#373FC6 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.6% C 0.205 H 272.3°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#373FC6
RGB	rgb(55, 63, 198)
HSL	hsl(237, 57%, 50%)
HSV	hsv(237, 72%, 78%)
CMYK	cmyk(72.2%, 68.2%, 0%, 22.4%)
CIE-LAB	lab(34.89, 41.80, -70.89)
CIE-LCH	lch(34.89, 82.30, 300.53°)
OKLab	oklab(45.59% 0.0084 -0.205)
OKLCH	oklch(45.59% 0.205 272.3)
XYZ	xyz(13.5427, 8.4431, 54.3311)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373FC6 #C6BE37

analogous

#3787C6 #373FC6 #7637C6

triadic

#373FC6 #C6373F #3FC637

tetradic

#373FC6 #C63787 #C6BE37 #37C676

square

#373FC6 #C63787 #C6BE37 #37C676

split-complementary

#373FC6 #C67637 #87C637

monochromatic

#1C2166 #2A3096 #373FC6 #666CD4 #969AE2

Accessibility & contrast

On white

7.81

#373FC6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#373FC6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373FC6

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373FC6	#FFFFFF	#000000	##FFFFFF
##373FC6	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059CA

Deuteranopia (green-blind)

#004BC3

Tritanopia (blue-blind)

#00647D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #373fc6;
/* rgb */ color: rgb(55, 63, 198);
/* oklch */ color: oklch(45.6% 0.205 272.3);

Tailwind

colors: {
  custom: {
    50: '#8275d8',
    500: '#373fc6',
    950: '#000000',
  },
}

SCSS

$custom: #373fc6;
$custom-light: #8275d8;
$custom-dark: #000000;

JSON

{
  "hex": "#373fc6",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 198
  },
  "hsl": {
    "h": 236.643,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45591,
    "c": 0.20518,
    "h": 272.3
  },
  "luminance": 0.08444
}

Semantic roles & 50–950 ramp

primary

#373FC6

secondary

#CDC98C

accent

#D748E0

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #373FC6

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

Preview Lab → · Contrast checker → · Palette generator →