#231381#231381

#231381 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.7% C 0.168 H 276.5°. Best body text is #FFFFFF at 14.17:1 contrast (WCAG AA passes).

Color values

HEX	#231381
RGB	rgb(35, 19, 129)
HSL	hsl(249, 74%, 29%)
HSV	hsv(249, 85%, 51%)
CMYK	cmyk(72.9%, 85.3%, 0%, 49.4%)
CIE-LAB	lab(17.50, 41.55, -57.75)
CIE-LCH	lch(17.50, 71.15, 305.73°)
OKLab	oklab(30.74% 0.0191 -0.1669)
OKLCH	oklch(30.74% 0.168 276.5)
XYZ	xyz(4.8872, 2.4076, 20.9718)
Luminance	0.0241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231381 #718113

analogous

#133A81 #231381 #5A1381

triadic

#231381 #812313 #138123

tetradic

#231381 #81133A #718113 #13815A

square

#231381 #81133A #718113 #13815A

split-complementary

#231381 #815A13 #3A8113

monochromatic

#07041B #150B4C #231381 #311BB6 #482EE0

Accessibility & contrast

On white

14.17

#231381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#231381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231381

14.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231381	#FFFFFF	#000000	##FFFFFF
##231381	1.00	14.17	1.48	14.17
#FFFFFF	14.17	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F84

Deuteranopia (green-blind)

#00267F

Tritanopia (blue-blind)

#00364B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #231381;
/* rgb */ color: rgb(35, 19, 129);
/* oklch */ color: oklch(30.7% 0.168 276.5);

Tailwind

colors: {
  custom: {
    50: '#6f55a7',
    500: '#231381',
    950: '#000000',
  },
}

SCSS

$custom: #231381;
$custom-light: #6f55a7;
$custom-dark: #000000;

JSON

{
  "hex": "#231381",
  "rgb": {
    "r": 35,
    "g": 19,
    "b": 129
  },
  "hsl": {
    "h": 248.727,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30742,
    "c": 0.16798,
    "h": 276.5
  },
  "luminance": 0.02408
}

Semantic roles & 50–950 ramp

primary

#231381

secondary

#A4B63A

accent

#F137D6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #231381

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

Preview Lab → · Contrast checker → · Palette generator →