#231CA9#231CA9

#231CA9 is a dark, highly saturated blue. Relative luminance 0.041; OKLCH L 36.5% C 0.208 H 271.5°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#231CA9
RGB	rgb(35, 28, 169)
HSL	hsl(243, 72%, 39%)
HSV	hsv(243, 83%, 66%)
CMYK	cmyk(79.3%, 83.4%, 0%, 33.7%)
CIE-LAB	lab(23.84, 49.81, -71.97)
CIE-LCH	lch(23.84, 87.52, 304.69°)
OKLab	oklab(36.54% 0.0053 -0.2082)
OKLCH	oklch(36.54% 0.208 271.5)
XYZ	xyz(8.2674, 4.0515, 37.8747)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231CA9 #A2A91C

analogous

#1C5BA9 #231CA9 #691CA9

triadic

#231CA9 #A9231C #1CA923

tetradic

#231CA9 #A91C5B #A2A91C #1CA969

square

#231CA9 #A91C5B #A2A91C #1CA969

split-complementary

#231CA9 #A9691C #5BA91C

monochromatic

#0D0B40 #181374 #231CA9 #3027DB #625BE4

Accessibility & contrast

On white

11.60

#231CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#231CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231CA9

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231CA9	#FFFFFF	#000000	##FFFFFF
##231CA9	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAD

Deuteranopia (green-blind)

#0032A7

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #231ca9;
/* rgb */ color: rgb(35, 28, 169);
/* oklch */ color: oklch(36.5% 0.208 271.5);

Tailwind

colors: {
  custom: {
    50: '#785dc4',
    500: '#231ca9',
    950: '#000000',
  },
}

SCSS

$custom: #231ca9;
$custom-light: #785dc4;
$custom-dark: #000000;

JSON

{
  "hex": "#231ca9",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 169
  },
  "hsl": {
    "h": 242.979,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36542,
    "c": 0.20831,
    "h": 271.5
  },
  "luminance": 0.04052
}

Semantic roles & 50–950 ramp

primary

#231CA9

secondary

#C2C859

accent

#EE39E5

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #231CA9

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

Preview Lab → · Contrast checker → · Palette generator →