#372CA9#372CA9

#372CA9 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.8% C 0.189 H 277.4°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#372CA9
RGB	rgb(55, 44, 169)
HSL	hsl(245, 59%, 42%)
HSV	hsv(245, 74%, 66%)
CMYK	cmyk(67.5%, 74%, 0%, 33.7%)
CIE-LAB	lab(28.05, 43.25, -64.95)
CIE-LCH	lch(28.05, 78.04, 303.66°)
OKLab	oklab(39.85% 0.0243 -0.1876)
OKLCH	oklch(39.85% 0.189 277.4)
XYZ	xyz(9.6353, 5.4773, 38.0779)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#372CA9 #9EA92C

analogous

#2C60A9 #372CA9 #762CA9

triadic

#372CA9 #A9372C #2CA937

tetradic

#372CA9 #A92C60 #9EA92C #2CA976

square

#372CA9 #A92C60 #9EA92C #2CA976

split-complementary

#372CA9 #A9762C #60A92C

monochromatic

#171348 #271F78 #372CA9 #5044CE #7D74DB

Accessibility & contrast

On white

10.02

#372CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#372CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #372CA9

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##372CA9	#FFFFFF	#000000	##FFFFFF
##372CA9	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AD

Deuteranopia (green-blind)

#003DA7

Tritanopia (blue-blind)

#004F68

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #372ca9;
/* rgb */ color: rgb(55, 44, 169);
/* oklch */ color: oklch(39.8% 0.189 277.4);

Tailwind

colors: {
  custom: {
    50: '#7e67c4',
    500: '#372ca9',
    950: '#000000',
  },
}

SCSS

$custom: #372ca9;
$custom-light: #7e67c4;
$custom-dark: #000000;

JSON

{
  "hex": "#372ca9",
  "rgb": {
    "r": 55,
    "g": 44,
    "b": 169
  },
  "hsl": {
    "h": 245.28,
    "s": 58.685,
    "l": 41.765
  },
  "oklch": {
    "l": 0.39845,
    "c": 0.18919,
    "h": 277.4
  },
  "luminance": 0.05478
}

Semantic roles & 50–950 ramp

primary

#372CA9

secondary

#BBC36E

accent

#E246D4

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #372CA9

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

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