#231FA8#231FA8

#231FA8 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 36.8% C 0.205 H 271.3°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#231FA8
RGB	rgb(35, 31, 168)
HSL	hsl(242, 69%, 39%)
HSV	hsv(242, 82%, 66%)
CMYK	cmyk(79.2%, 81.5%, 0%, 34.1%)
CIE-LAB	lab(24.20, 48.07, -70.76)
CIE-LCH	lch(24.20, 85.54, 304.19°)
OKLab	oklab(36.76% 0.0048 -0.2048)
OKLCH	oklch(36.76% 0.205 271.3)
XYZ	xyz(8.2486, 4.1635, 37.4071)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231FA8 #A4A81F

analogous

#1F60A8 #231FA8 #681FA8

triadic

#231FA8 #A8231F #1FA823

tetradic

#231FA8 #A81F60 #A4A81F #1FA868

square

#231FA8 #A81F60 #A4A81F #1FA868

split-complementary

#231FA8 #A8681F #60A81F

monochromatic

#0D0C41 #181574 #231FA8 #312CD8 #6460E2

Accessibility & contrast

On white

11.46

#231FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#231FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231FA8

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231FA8	#FFFFFF	#000000	##FFFFFF
##231FA8	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AC

Deuteranopia (green-blind)

#0032A6

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #231fa8;
/* rgb */ color: rgb(35, 31, 168);
/* oklch */ color: oklch(36.8% 0.205 271.3);

Tailwind

colors: {
  custom: {
    50: '#775ec3',
    500: '#231fa8',
    950: '#000000',
  },
}

SCSS

$custom: #231fa8;
$custom-light: #775ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#231fa8",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 168
  },
  "hsl": {
    "h": 241.752,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.36759,
    "c": 0.20486,
    "h": 271.3
  },
  "luminance": 0.04164
}

Semantic roles & 50–950 ramp

primary

#231FA8

secondary

#C3C65D

accent

#EC3CE7

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #231FA8

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

Preview Lab → · Contrast checker → · Palette generator →