#231C79#231C79

#231C79 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.150 H 276.5°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#231C79
RGB	rgb(35, 28, 121)
HSL	hsl(245, 62%, 29%)
HSV	hsv(245, 77%, 47%)
CMYK	cmyk(71.1%, 76.9%, 0%, 52.5%)
CIE-LAB	lab(18.22, 34.15, -51.45)
CIE-LCH	lch(18.22, 61.75, 303.57°)
OKLab	oklab(30.98% 0.0169 -0.1487)
OKLCH	oklch(30.98% 0.15 276.5)
XYZ	xyz(4.5585, 2.5679, 18.3409)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C79 #72791C

analogous

#1C4479 #231C79 #521C79

triadic

#231C79 #79231C #1C7923

tetradic

#231C79 #791C44 #72791C #1C7952

square

#231C79 #791C44 #72791C #1C7952

split-complementary

#231C79 #79521C #44791C

monochromatic

#070619 #151047 #231C79 #3128AB #483DD2

Accessibility & contrast

On white

13.87

#231C79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#231C79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C79

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C79	#FFFFFF	#000000	##FFFFFF
##231C79	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307C

Deuteranopia (green-blind)

#002877

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #231c79;
/* rgb */ color: rgb(35, 28, 121);
/* oklch */ color: oklch(31.0% 0.150 276.5);

Tailwind

colors: {
  custom: {
    50: '#6c5aa1',
    500: '#231c79',
    950: '#000000',
  },
}

SCSS

$custom: #231c79;
$custom-light: #6c5aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#231c79",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 121
  },
  "hsl": {
    "h": 244.516,
    "s": 62.416,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30977,
    "c": 0.14963,
    "h": 276.5
  },
  "luminance": 0.02568
}

Semantic roles & 50–950 ramp

primary

#231C79

secondary

#A5AD44

accent

#E542D9

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08040F

muted

#7A797F

Preview Lab

Preview with #231C79

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

Preview Lab → · Contrast checker → · Palette generator →