#231FA9#231FA9

#231FA9 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 36.9% C 0.206 H 271.3°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#231FA9
RGB	rgb(35, 31, 169)
HSL	hsl(242, 69%, 39%)
HSV	hsv(242, 82%, 66%)
CMYK	cmyk(79.3%, 81.7%, 0%, 33.7%)
CIE-LAB	lab(24.32, 48.39, -71.16)
CIE-LCH	lch(24.32, 86.06, 304.21°)
OKLab	oklab(36.88% 0.0046 -0.206)
OKLCH	oklch(36.88% 0.206 271.3)
XYZ	xyz(8.3421, 4.2009, 37.8996)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231FA9 #A5A91F

analogous

#1F60A9 #231FA9 #681FA9

triadic

#231FA9 #A9231F #1FA923

tetradic

#231FA9 #A91F60 #A5A91F #1FA968

square

#231FA9 #A91F60 #A5A91F #1FA968

split-complementary

#231FA9 #A9681F #60A91F

monochromatic

#0E0C42 #181675 #231FA9 #322DD8 #6460E2

Accessibility & contrast

On white

11.41

#231FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#231FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231FA9

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231FA9	#FFFFFF	#000000	##FFFFFF
##231FA9	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AD

Deuteranopia (green-blind)

#0033A7

Tritanopia (blue-blind)

#004B65

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #231fa9;
/* rgb */ color: rgb(35, 31, 169);
/* oklch */ color: oklch(36.9% 0.206 271.3);

Tailwind

colors: {
  custom: {
    50: '#785fc4',
    500: '#231fa9',
    950: '#000000',
  },
}

SCSS

$custom: #231fa9;
$custom-light: #785fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#231fa9",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 169
  },
  "hsl": {
    "h": 241.739,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.36877,
    "c": 0.20602,
    "h": 271.3
  },
  "luminance": 0.04202
}

Semantic roles & 50–950 ramp

primary

#231FA9

secondary

#C4C75D

accent

#EC3CE7

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #231FA9

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

Preview Lab → · Contrast checker → · Palette generator →