#4231B0#4231B0

#4231B0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 42.1% C 0.190 H 280.5°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#4231B0
RGB	rgb(66, 49, 176)
HSL	hsl(248, 56%, 44%)
HSV	hsv(248, 72%, 69%)
CMYK	cmyk(62.5%, 72.2%, 0%, 31%)
CIE-LAB	lab(30.61, 44.06, -64.91)
CIE-LCH	lch(30.61, 78.45, 304.17°)
OKLab	oklab(42.09% 0.0346 -0.1872)
OKLCH	oklch(42.09% 0.19 280.5)
XYZ	xyz(11.1791, 6.4886, 41.7292)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 4.60

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4231B0 #9FB031

analogous

#3160B0 #4231B0 #8131B0

triadic

#4231B0 #B04231 #31B042

tetradic

#4231B0 #B03160 #9FB031 #31B081

square

#4231B0 #B03160 #9FB031 #31B081

split-complementary

#4231B0 #B08131 #60B031

monochromatic

#1E1650 #302480 #4231B0 #6150CE #8C80DC

Accessibility & contrast

On white

9.14

#4231B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#4231B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4231B0

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4231B0	#FFFFFF	#000000	##FFFFFF
##4231B0	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB4

Deuteranopia (green-blind)

#0043AE

Tritanopia (blue-blind)

#00546D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #4231b0;
/* rgb */ color: rgb(66, 49, 176);
/* oklch */ color: oklch(42.1% 0.190 280.5);

Tailwind

colors: {
  custom: {
    50: '#846bc9',
    500: '#4231b0',
    950: '#000000',
  },
}

SCSS

$custom: #4231b0;
$custom-light: #846bc9;
$custom-dark: #000000;

JSON

{
  "hex": "#4231b0",
  "rgb": {
    "r": 66,
    "g": 49,
    "b": 176
  },
  "hsl": {
    "h": 248.031,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42092,
    "c": 0.19037,
    "h": 280.5
  },
  "luminance": 0.06489
}

Semantic roles & 50–950 ramp

primary

#4231B0

secondary

#BAC578

accent

#E048CB

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4231B0

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

Preview Lab → · Contrast checker → · Palette generator →