#4237AC#4237AC

#4237AC is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.6% C 0.179 H 279.9°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#4237AC
RGB	rgb(66, 55, 172)
HSL	hsl(246, 52%, 45%)
HSV	hsv(246, 68%, 67%)
CMYK	cmyk(61.6%, 68%, 0%, 32.5%)
CIE-LAB	lab(31.51, 39.32, -61.05)
CIE-LCH	lch(31.51, 72.62, 302.78°)
OKLab	oklab(42.62% 0.0306 -0.1759)
OKLCH	oklch(42.62% 0.179 279.9)
XYZ	xyz(11.0570, 6.8684, 39.7648)
Luminance	0.0687 (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

#4237AC #A1AC37

analogous

#3767AC #4237AC #7D37AC

triadic

#4237AC #AC4237 #37AC42

tetradic

#4237AC #AC3767 #A1AC37 #37AC7D

square

#4237AC #AC3767 #A1AC37 #37AC7D

split-complementary

#4237AC #AC7D37 #67AC37

monochromatic

#1E194F #30287E #4237AC #6257C9 #8D85D8

Accessibility & contrast

On white

8.85

#4237AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#4237AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237AC

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237AC	#FFFFFF	#000000	##FFFFFF
##4237AC	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0046AA

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4237ac;
/* rgb */ color: rgb(66, 55, 172);
/* oklch */ color: oklch(42.6% 0.179 279.9);

Tailwind

colors: {
  custom: {
    50: '#836fc6',
    500: '#4237ac',
    950: '#000000',
  },
}

SCSS

$custom: #4237ac;
$custom-light: #836fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#4237ac",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 172
  },
  "hsl": {
    "h": 245.641,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42619,
    "c": 0.17857,
    "h": 279.9
  },
  "luminance": 0.06869
}

Semantic roles & 50–950 ramp

primary

#4237AC

secondary

#BBC27D

accent

#DB4DCE

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4237AC

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

Preview Lab → · Contrast checker → · Palette generator →