#4B37BB#4B37BB

#4B37BB is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.7% C 0.196 H 281.9°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#4B37BB
RGB	rgb(75, 55, 187)
HSL	hsl(249, 55%, 47%)
HSV	hsv(249, 71%, 73%)
CMYK	cmyk(59.9%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(33.59, 45.38, -66.51)
CIE-LCH	lch(33.59, 80.52, 304.31°)
OKLab	oklab(44.72% 0.0404 -0.1916)
OKLCH	oklch(44.72% 0.196 281.9)
XYZ	xyz(13.2347, 7.8152, 47.8151)
Luminance	0.0782 (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

#4B37BB #A7BB37

analogous

#3765BB #4B37BB #8D37BB

triadic

#4B37BB #BB4B37 #37BB4B

tetradic

#4B37BB #BB3765 #A7BB37 #37BB8D

square

#4B37BB #BB3765 #A7BB37 #37BB8D

split-complementary

#4B37BB #BB8D37 #65BB37

monochromatic

#251B5C #38298C #4B37BB #705FD0 #9B8EDE

Accessibility & contrast

On white

8.19

#4B37BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#4B37BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4B37BB

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B37BB	#FFFFFF	#000000	##FFFFFF
##4B37BB	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#005A75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4b37bb;
/* rgb */ color: rgb(75, 55, 187);
/* oklch */ color: oklch(44.7% 0.196 281.9);

Tailwind

colors: {
  custom: {
    50: '#8a70d1',
    500: '#4b37bb',
    950: '#000000',
  },
}

SCSS

$custom: #4b37bb;
$custom-light: #8a70d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4b37bb",
  "rgb": {
    "r": 75,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 249.091,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44717,
    "c": 0.19586,
    "h": 281.9
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary

#4B37BB

secondary

#BEC985

accent

#DE4AC7

background

#F9F6FD

surface

#F1ECFA

border

#CBC7D3

text

#0D0714

muted

#7E7A83

Preview Lab

Preview with #4B37BB

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

Preview Lab → · Contrast checker → · Palette generator →