#372CA8#372CA8

#372CA8 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.7% C 0.188 H 277.5°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#372CA8
RGB	rgb(55, 44, 168)
HSL	hsl(245, 58%, 42%)
HSV	hsv(245, 74%, 66%)
CMYK	cmyk(67.3%, 73.8%, 0%, 34.1%)
CIE-LAB	lab(27.95, 42.93, -64.52)
CIE-LCH	lch(27.95, 77.49, 303.64°)
OKLab	oklab(39.74% 0.0245 -0.1863)
OKLCH	oklch(39.74% 0.188 277.5)
XYZ	xyz(9.5418, 5.4399, 37.5854)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372CA8 #9DA82C

analogous

#2C5FA8 #372CA8 #752CA8

triadic

#372CA8 #A8372C #2CA837

tetradic

#372CA8 #A82C5F #9DA82C #2CA875

square

#372CA8 #A82C5F #9DA82C #2CA875

split-complementary

#372CA8 #A8752C #5FA82C

monochromatic

#171347 #271F78 #372CA8 #5043CE #7D74DB

Accessibility & contrast

On white

10.06

#372CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#372CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372CA8

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372CA8	#FFFFFF	#000000	##FFFFFF
##372CA8	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AC

Deuteranopia (green-blind)

#003DA6

Tritanopia (blue-blind)

#004F67

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ca8;
/* rgb */ color: rgb(55, 44, 168);
/* oklch */ color: oklch(39.7% 0.188 277.5);

Tailwind

colors: {
  custom: {
    50: '#7e67c3',
    500: '#372ca8',
    950: '#000000',
  },
}

SCSS

$custom: #372ca8;
$custom-light: #7e67c3;
$custom-dark: #000000;

JSON

{
  "hex": "#372ca8",
  "rgb": {
    "r": 55,
    "g": 44,
    "b": 168
  },
  "hsl": {
    "h": 245.323,
    "s": 58.491,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39743,
    "c": 0.18795,
    "h": 277.5
  },
  "luminance": 0.05441
}

Semantic roles & 50–950 ramp

primary

#372CA8

secondary

#BBC26E

accent

#E246D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #372CA8

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

Preview Lab → · Contrast checker → · Palette generator →