#231D81#231D81

#231D81 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.159 H 275.2°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#231D81
RGB	rgb(35, 29, 129)
HSL	hsl(244, 63%, 31%)
HSV	hsv(244, 78%, 51%)
CMYK	cmyk(72.9%, 77.5%, 0%, 49.4%)
CIE-LAB	lab(19.31, 36.31, -54.75)
CIE-LCH	lch(19.31, 65.69, 303.55°)
OKLab	oklab(32.01% 0.0145 -0.1583)
OKLCH	oklch(32.01% 0.159 275.2)
XYZ	xyz(5.0936, 2.8205, 21.0406)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D81 #7B811D

analogous

#1D4981 #231D81 #551D81

triadic

#231D81 #81231D #1D8123

tetradic

#231D81 #811D49 #7B811D #1D8155

square

#231D81 #811D49 #7B811D #1D8155

split-complementary

#231D81 #81551D #49811D

monochromatic

#08071D #15124F #231D81 #3128B3 #4C44D5

Accessibility & contrast

On white

13.43

#231D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#231D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D81

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D81	#FFFFFF	#000000	##FFFFFF
##231D81	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003384

Deuteranopia (green-blind)

#002A7F

Tritanopia (blue-blind)

#003A4E

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231d81;
/* rgb */ color: rgb(35, 29, 129);
/* oklch */ color: oklch(32.0% 0.159 275.2);

Tailwind

colors: {
  custom: {
    50: '#6e5ba7',
    500: '#231d81',
    950: '#000000',
  },
}

SCSS

$custom: #231d81;
$custom-light: #6e5ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#231d81",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 129
  },
  "hsl": {
    "h": 243.6,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32008,
    "c": 0.15896,
    "h": 275.2
  },
  "luminance": 0.02821
}

Semantic roles & 50–950 ramp

primary

#231D81

secondary

#AEB446

accent

#E641DC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #231D81

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

Preview Lab → · Contrast checker → · Palette generator →