#372DA8#372DA8

#372DA8 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.9% C 0.187 H 277.3°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#372DA8
RGB	rgb(55, 45, 168)
HSL	hsl(245, 58%, 42%)
HSV	hsv(245, 73%, 66%)
CMYK	cmyk(67.3%, 73.2%, 0%, 34.1%)
CIE-LAB	lab(28.16, 42.36, -64.18)
CIE-LCH	lch(28.16, 76.90, 303.43°)
OKLab	oklab(39.89% 0.0239 -0.1854)
OKLCH	oklch(39.89% 0.187 277.3)
XYZ	xyz(9.5795, 5.5153, 37.5979)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.60

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372DA8 #9EA82D

analogous

#2D61A8 #372DA8 #752DA8

triadic

#372DA8 #A8372D #2DA837

tetradic

#372DA8 #A82D61 #9EA82D #2DA875

square

#372DA8 #A82D61 #9EA82D #2DA875

split-complementary

#372DA8 #A8752D #61A82D

monochromatic

#171347 #272078 #372DA8 #5045CD #7D75DA

Accessibility & contrast

On white

9.98

#372DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#372DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372DA8

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372DA8	#FFFFFF	#000000	##FFFFFF
##372DA8	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AC

Deuteranopia (green-blind)

#003DA6

Tritanopia (blue-blind)

#005068

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372da8;
/* rgb */ color: rgb(55, 45, 168);
/* oklch */ color: oklch(39.9% 0.187 277.3);

Tailwind

colors: {
  custom: {
    50: '#7d68c3',
    500: '#372da8',
    950: '#000000',
  },
}

SCSS

$custom: #372da8;
$custom-light: #7d68c3;
$custom-dark: #000000;

JSON

{
  "hex": "#372da8",
  "rgb": {
    "r": 55,
    "g": 45,
    "b": 168
  },
  "hsl": {
    "h": 244.878,
    "s": 57.746,
    "l": 41.765
  },
  "oklch": {
    "l": 0.39887,
    "c": 0.18691,
    "h": 277.3
  },
  "luminance": 0.05516
}

Semantic roles & 50–950 ramp

primary

#372DA8

secondary

#BBC26F

accent

#E147D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #372DA8

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

Preview Lab → · Contrast checker → · Palette generator →