#4237C3#4237C3

#4237C3 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.8% C 0.207 H 277.4°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#4237C3
RGB	rgb(66, 55, 195)
HSL	hsl(245, 56%, 49%)
HSV	hsv(245, 72%, 76%)
CMYK	cmyk(66.2%, 71.8%, 0%, 23.5%)
CIE-LAB	lab(33.63, 46.72, -71.19)
CIE-LCH	lch(33.63, 85.15, 303.27°)
OKLab	oklab(44.79% 0.0269 -0.2056)
OKLCH	oklch(44.79% 0.207 277.4)
XYZ	xyz(13.4601, 7.8296, 52.4211)
Luminance	0.0783 (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

#4237C3 #B8C337

analogous

#3772C3 #4237C3 #8837C3

triadic

#4237C3 #C34237 #37C342

tetradic

#4237C3 #C33772 #B8C337 #37C388

square

#4237C3 #C33772 #B8C337 #37C388

split-complementary

#4237C3 #C38837 #72C337

monochromatic

#221C64 #322A93 #4237C3 #6D64D3 #9A94E1

Accessibility & contrast

On white

8.18

#4237C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#4237C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4237C3

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4237C3	#FFFFFF	#000000	##FFFFFF
##4237C3	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C7

Deuteranopia (green-blind)

#0049C0

Tritanopia (blue-blind)

#005E79

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4237c3;
/* rgb */ color: rgb(66, 55, 195);
/* oklch */ color: oklch(44.8% 0.207 277.4);

Tailwind

colors: {
  custom: {
    50: '#8770d6',
    500: '#4237c3',
    950: '#000000',
  },
}

SCSS

$custom: #4237c3;
$custom-light: #8770d6;
$custom-dark: #000000;

JSON

{
  "hex": "#4237c3",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 195
  },
  "hsl": {
    "h": 244.714,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.44785,
    "c": 0.20734,
    "h": 277.4
  },
  "luminance": 0.07831
}

Semantic roles & 50–950 ramp

primary

#4237C3

secondary

#C7CC8A

accent

#DF49D3

background

#F9F6FD

surface

#F1ECFA

border

#CBC7D3

text

#0D0714

muted

#7E7A83

Preview Lab

Preview with #4237C3

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

Preview Lab → · Contrast checker → · Palette generator →