#231F83#231F83

#231F83 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.5% C 0.159 H 274.7°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#231F83
RGB	rgb(35, 31, 131)
HSL	hsl(242, 62%, 32%)
HSV	hsv(242, 76%, 51%)
CMYK	cmyk(73.3%, 76.3%, 0%, 48.6%)
CIE-LAB	lab(19.95, 35.83, -54.96)
CIE-LCH	lch(19.95, 65.61, 303.10°)
OKLab	oklab(32.52% 0.013 -0.1589)
OKLCH	oklch(32.52% 0.159 274.7)
XYZ	xyz(5.2785, 2.9755, 21.7645)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F83 #7F831F

analogous

#1F4D83 #231F83 #551F83

triadic

#231F83 #83231F #1F8323

tetradic

#231F83 #831F4D #7F831F #1F8355

square

#231F83 #831F4D #7F831F #1F8355

split-complementary

#231F83 #83551F #4D831F

monochromatic

#090820 #161352 #231F83 #302BB4 #4E49D4

Accessibility & contrast

On white

13.16

#231F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#231F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F83

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F83	#FFFFFF	#000000	##FFFFFF
##231F83	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003586

Deuteranopia (green-blind)

#002C81

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #231f83;
/* rgb */ color: rgb(35, 31, 131);
/* oklch */ color: oklch(32.5% 0.159 274.7);

Tailwind

colors: {
  custom: {
    50: '#6e5ca8',
    500: '#231f83',
    950: '#000000',
  },
}

SCSS

$custom: #231f83;
$custom-light: #6e5ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#231f83",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 131
  },
  "hsl": {
    "h": 242.4,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32523,
    "c": 0.15948,
    "h": 274.7
  },
  "luminance": 0.02976
}

Semantic roles & 50–950 ramp

primary

#231F83

secondary

#B1B648

accent

#E543DE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #231F83

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

Preview Lab → · Contrast checker → · Palette generator →