#372BB1#372BB1

#372BB1 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.5% C 0.200 H 276.6°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#372BB1
RGB	rgb(55, 43, 177)
HSL	hsl(245, 61%, 43%)
HSV	hsv(245, 76%, 69%)
CMYK	cmyk(68.9%, 75.7%, 0%, 30.6%)
CIE-LAB	lab(28.68, 46.36, -68.72)
CIE-LCH	lch(28.68, 82.90, 304.01°)
OKLab	oklab(40.53% 0.0232 -0.1986)
OKLCH	oklch(40.53% 0.2 276.6)
XYZ	xyz(10.3726, 5.7134, 42.1426)
Luminance	0.0571 (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

#372BB1 #A5B12B

analogous

#2B62B1 #372BB1 #7A2BB1

triadic

#372BB1 #B1372B #2BB137

tetradic

#372BB1 #B12B62 #A5B12B #2BB17A

square

#372BB1 #B12B62 #A5B12B #2BB17A

split-complementary

#372BB1 #B17A2B #62B12B

monochromatic

#18134F #281F80 #372BB1 #5347D2 #8178DE

Accessibility & contrast

On white

9.80

#372BB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#372BB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372BB1

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372BB1	#FFFFFF	#000000	##FFFFFF
##372BB1	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B5

Deuteranopia (green-blind)

#003EAF

Tritanopia (blue-blind)

#00526C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #372bb1;
/* rgb */ color: rgb(55, 43, 177);
/* oklch */ color: oklch(40.5% 0.200 276.6);

Tailwind

colors: {
  custom: {
    50: '#8067ca',
    500: '#372bb1',
    950: '#000000',
  },
}

SCSS

$custom: #372bb1;
$custom-light: #8067ca;
$custom-dark: #000000;

JSON

{
  "hex": "#372bb1",
  "rgb": {
    "r": 55,
    "g": 43,
    "b": 177
  },
  "hsl": {
    "h": 245.373,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40531,
    "c": 0.19995,
    "h": 276.6
  },
  "luminance": 0.05714
}

Semantic roles & 50–950 ramp

primary

#372BB1

secondary

#BFC672

accent

#E444D6

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0613

muted

#7D7A82

Preview Lab

Preview with #372BB1

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

Preview Lab → · Contrast checker → · Palette generator →