#4237AF#4237AF

#4237AF is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.9% C 0.182 H 279.5°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#4237AF
RGB	rgb(66, 55, 175)
HSL	hsl(246, 52%, 45%)
HSV	hsv(246, 69%, 69%)
CMYK	cmyk(62.3%, 68.6%, 0%, 31.4%)
CIE-LAB	lab(31.77, 40.29, -62.41)
CIE-LCH	lch(31.77, 74.28, 302.85°)
OKLab	oklab(42.89% 0.0302 -0.1799)
OKLCH	oklch(42.89% 0.182 279.5)
XYZ	xyz(11.3484, 6.9849, 41.2993)
Luminance	0.0699 (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

#4237AF #A4AF37

analogous

#3768AF #4237AF #7E37AF

triadic

#4237AF #AF4237 #37AF42

tetradic

#4237AF #AF3768 #A4AF37 #37AF7E

square

#4237AF #AF3768 #A4AF37 #37AF7E

split-complementary

#4237AF #AF7E37 #68AF37

monochromatic

#1F1A52 #302880 #4237AF #6359CB #8F87D9

Accessibility & contrast

On white

8.76

#4237AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#4237AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237AF

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237AF	#FFFFFF	#000000	##FFFFFF
##4237AF	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB3

Deuteranopia (green-blind)

#0046AD

Tritanopia (blue-blind)

#00576E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4237af;
/* rgb */ color: rgb(66, 55, 175);
/* oklch */ color: oklch(42.9% 0.182 279.5);

Tailwind

colors: {
  custom: {
    50: '#836fc8',
    500: '#4237af',
    950: '#000000',
  },
}

SCSS

$custom: #4237af;
$custom-light: #836fc8;
$custom-dark: #000000;

JSON

{
  "hex": "#4237af",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 175
  },
  "hsl": {
    "h": 245.5,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42894,
    "c": 0.18242,
    "h": 279.5
  },
  "luminance": 0.06986
}

Semantic roles & 50–950 ramp

primary

#4237AF

secondary

#BDC37F

accent

#DC4CCE

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4237AF

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

Preview Lab → · Contrast checker → · Palette generator →