#373CB7#373CB7

#373CB7 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.189 H 273.6°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#373CB7
RGB	rgb(55, 60, 183)
HSL	hsl(238, 54%, 47%)
HSV	hsv(238, 70%, 72%)
CMYK	cmyk(69.9%, 67.2%, 0%, 28.2%)
CIE-LAB	lab(32.84, 38.48, -65.45)
CIE-LCH	lch(32.84, 75.92, 300.45°)
OKLab	oklab(43.68% 0.0118 -0.1891)
OKLCH	oklch(43.68% 0.189 273.6)
XYZ	xyz(11.7358, 7.4617, 45.6123)
Luminance	0.0746 (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

#373CB7 #B7B237

analogous

#377CB7 #373CB7 #7237B7

triadic

#373CB7 #B7373C #3CB737

tetradic

#373CB7 #B7377C #B7B237 #37B772

square

#373CB7 #B7377C #B7B237 #37B772

split-complementary

#373CB7 #B77237 #7CB737

monochromatic

#1B1D59 #292D88 #373CB7 #5D61CE #8C8FDC

Accessibility & contrast

On white

8.42

#373CB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#373CB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373CB7

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373CB7	#FFFFFF	#000000	##FFFFFF
##373CB7	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BB

Deuteranopia (green-blind)

#0047B5

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #373cb7;
/* rgb */ color: rgb(55, 60, 183);
/* oklch */ color: oklch(43.7% 0.189 273.6);

Tailwind

colors: {
  custom: {
    50: '#7f72ce',
    500: '#373cb7',
    950: '#000000',
  },
}

SCSS

$custom: #373cb7;
$custom-light: #7f72ce;
$custom-dark: #000000;

JSON

{
  "hex": "#373cb7",
  "rgb": {
    "r": 55,
    "g": 60,
    "b": 183
  },
  "hsl": {
    "h": 237.656,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43683,
    "c": 0.18947,
    "h": 273.6
  },
  "luminance": 0.07463
}

Semantic roles & 50–950 ramp

primary

#373CB7

secondary

#C7C483

accent

#D74BDD

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #373CB7

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

Preview Lab → · Contrast checker → · Palette generator →