#4237B2#4237B2

#4237B2 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.2% C 0.186 H 279.2°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#4237B2
RGB	rgb(66, 55, 178)
HSL	hsl(245, 53%, 46%)
HSV	hsv(245, 69%, 70%)
CMYK	cmyk(62.9%, 69.1%, 0%, 30.2%)
CIE-LAB	lab(32.04, 41.26, -63.75)
CIE-LCH	lch(32.04, 75.94, 302.91°)
OKLab	oklab(43.17% 0.0297 -0.1838)
OKLCH	oklch(43.17% 0.186 279.2)
XYZ	xyz(11.6463, 7.1041, 42.8683)
Luminance	0.0711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.27

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4237B2 #A7B237

analogous

#3769B2 #4237B2 #7F37B2

triadic

#4237B2 #B24237 #37B242

tetradic

#4237B2 #B23769 #A7B237 #37B27F

square

#4237B2 #B23769 #A7B237 #37B27F

split-complementary

#4237B2 #B27F37 #69B237

monochromatic

#1F1A54 #312983 #4237B2 #645ACC #9089DB

Accessibility & contrast

On white

8.67

#4237B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#4237B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237B2

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237B2	#FFFFFF	#000000	##FFFFFF
##4237B2	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0046B0

Tritanopia (blue-blind)

#005870

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #4237b2;
/* rgb */ color: rgb(66, 55, 178);
/* oklch */ color: oklch(43.2% 0.186 279.2);

Tailwind

colors: {
  custom: {
    50: '#846fca',
    500: '#4237b2',
    950: '#000000',
  },
}

SCSS

$custom: #4237b2;
$custom-light: #846fca;
$custom-dark: #000000;

JSON

{
  "hex": "#4237b2",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 178
  },
  "hsl": {
    "h": 245.366,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43171,
    "c": 0.18623,
    "h": 279.2
  },
  "luminance": 0.07105
}

Semantic roles & 50–950 ramp

primary

#4237B2

secondary

#BEC580

accent

#DC4CCF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4237B2

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

Preview Lab → · Contrast checker → · Palette generator →