#231583#231583

#231583 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.2% C 0.169 H 276.0°. Best body text is #FFFFFF at 13.94:1 contrast (WCAG AA passes).

Color values

HEX	#231583
RGB	rgb(35, 21, 131)
HSL	hsl(248, 72%, 30%)
HSV	hsv(248, 84%, 51%)
CMYK	cmyk(73.3%, 84%, 0%, 48.6%)
CIE-LAB	lab(18.06, 41.23, -58.08)
CIE-LCH	lch(18.06, 71.23, 305.37°)
OKLab	oklab(31.2% 0.0177 -0.1679)
OKLCH	oklch(31.2% 0.169 276)
XYZ	xyz(5.0567, 2.5319, 21.6905)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231583 #758315

analogous

#153E83 #231583 #5A1583

triadic

#231583 #832315 #158323

tetradic

#231583 #83153E #758315 #15835A

square

#231583 #83153E #758315 #15835A

split-complementary

#231583 #835A15 #3E8315

monochromatic

#07041A #150D4E #231583 #311DB8 #4A34DE

Accessibility & contrast

On white

13.94

#231583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#231583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231583

13.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231583	#FFFFFF	#000000	##FFFFFF
##231583	1.00	13.94	1.51	13.94
#FFFFFF	13.94	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003186

Deuteranopia (green-blind)

#002781

Tritanopia (blue-blind)

#00384D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #231583;
/* rgb */ color: rgb(35, 21, 131);
/* oklch */ color: oklch(31.2% 0.169 276.0);

Tailwind

colors: {
  custom: {
    50: '#6f56a8',
    500: '#231583',
    950: '#000000',
  },
}

SCSS

$custom: #231583;
$custom-light: #6f56a8;
$custom-dark: #000000;

JSON

{
  "hex": "#231583",
  "rgb": {
    "r": 35,
    "g": 21,
    "b": 131
  },
  "hsl": {
    "h": 247.636,
    "s": 72.368,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31204,
    "c": 0.1688,
    "h": 276
  },
  "luminance": 0.02532
}

Semantic roles & 50–950 ramp

primary

#231583

secondary

#A8B83C

accent

#EF39D8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #231583

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

Preview Lab → · Contrast checker → · Palette generator →