#4337BB#4337BB

#4337BB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.1% C 0.197 H 278.6°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#4337BB
RGB	rgb(67, 55, 187)
HSL	hsl(245, 55%, 47%)
HSV	hsv(245, 71%, 73%)
CMYK	cmyk(64.2%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(32.95, 44.29, -67.60)
CIE-LCH	lch(32.95, 80.82, 303.23°)
OKLab	oklab(44.09% 0.0296 -0.1951)
OKLCH	oklch(44.09% 0.197 278.6)
XYZ	xyz(12.6477, 7.5125, 47.7876)
Luminance	0.0751 (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

#4337BB #AFBB37

analogous

#376DBB #4337BB #8537BB

triadic

#4337BB #BB4337 #37BB43

tetradic

#4337BB #BB376D #AFBB37 #37BB85

square

#4337BB #BB376D #AFBB37 #37BB85

split-complementary

#4337BB #BB8537 #6DBB37

monochromatic

#211B5C #32298C #4337BB #695FD0 #968EDE

Accessibility & contrast

On white

8.39

#4337BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#4337BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4337BB

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4337BB	#FFFFFF	#000000	##FFFFFF
##4337BB	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0048B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4337bb;
/* rgb */ color: rgb(67, 55, 187);
/* oklch */ color: oklch(44.1% 0.197 278.6);

Tailwind

colors: {
  custom: {
    50: '#866fd1',
    500: '#4337bb',
    950: '#000000',
  },
}

SCSS

$custom: #4337bb;
$custom-light: #866fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#4337bb",
  "rgb": {
    "r": 67,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 245.455,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4409,
    "c": 0.1973,
    "h": 278.6
  },
  "luminance": 0.07514
}

Semantic roles & 50–950 ramp

primary

#4337BB

secondary

#C2C985

accent

#DE4AD0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4337BB

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

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