#372F9B#372F9B

#372F9B is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.9% C 0.168 H 278.5°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#372F9B
RGB	rgb(55, 47, 155)
HSL	hsl(244, 53%, 40%)
HSV	hsv(244, 70%, 61%)
CMYK	cmyk(64.5%, 69.7%, 0%, 39.2%)
CIE-LAB	lab(27.33, 36.90, -57.66)
CIE-LCH	lch(27.33, 68.45, 302.61°)
OKLab	oklab(38.92% 0.0247 -0.1663)
OKLCH	oklch(38.92% 0.168 278.5)
XYZ	xyz(8.5066, 5.2111, 31.5616)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372F9B #939B2F

analogous

#2F5D9B #372F9B #6D2F9B

triadic

#372F9B #9B372F #2F9B37

tetradic

#372F9B #9B2F5D #939B2F #2F9B6D

square

#372F9B #9B2F5D #939B2F #2F9B6D

split-complementary

#372F9B #9B6D2F #5D9B2F

monochromatic

#16133D #26216C #372F9B #4B42C6 #7871D4

Accessibility & contrast

On white

10.28

#372F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#372F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372F9B

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372F9B	#FFFFFF	#000000	##FFFFFF
##372F9B	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459E

Deuteranopia (green-blind)

#003C99

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #372f9b;
/* rgb */ color: rgb(55, 47, 155);
/* oklch */ color: oklch(38.9% 0.168 278.5);

Tailwind

colors: {
  custom: {
    50: '#7b68b9',
    500: '#372f9b',
    950: '#000000',
  },
}

SCSS

$custom: #372f9b;
$custom-light: #7b68b9;
$custom-dark: #000000;

JSON

{
  "hex": "#372f9b",
  "rgb": {
    "r": 55,
    "g": 47,
    "b": 155
  },
  "hsl": {
    "h": 244.444,
    "s": 53.465,
    "l": 39.608
  },
  "oklch": {
    "l": 0.38915,
    "c": 0.16814,
    "h": 278.5
  },
  "luminance": 0.05212
}

Semantic roles & 50–950 ramp

primary

#372F9B

secondary

#B5BB6A

accent

#DD4BD2

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #372F9B

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

Preview Lab → · Contrast checker → · Palette generator →