#231D71#231D71

#231D71 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.138 H 277.4°. Best body text is #FFFFFF at 14.14:1 contrast (WCAG AA passes).

Color values

HEX	#231D71
RGB	rgb(35, 29, 113)
HSL	hsl(244, 59%, 28%)
HSV	hsv(244, 74%, 44%)
CMYK	cmyk(69%, 74.3%, 0%, 55.7%)
CIE-LAB	lab(17.59, 30.75, -47.34)
CIE-LCH	lch(17.59, 56.45, 303.00°)
OKLab	oklab(30.27% 0.0178 -0.1367)
OKLCH	oklch(30.27% 0.138 277.4)
XYZ	xyz(4.1122, 2.4280, 15.8715)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D71 #6B711D

analogous

#1D4171 #231D71 #4D1D71

triadic

#231D71 #71231D #1D7123

tetradic

#231D71 #711D41 #6B711D #1D714D

square

#231D71 #711D41 #6B711D #1D714D

split-complementary

#231D71 #714D1D #41711D

monochromatic

#080618 #141140 #231D71 #3229A2 #463CCD

Accessibility & contrast

On white

14.14

#231D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#231D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D71

14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D71	#FFFFFF	#000000	##FFFFFF
##231D71	1.00	14.14	1.49	14.14
#FFFFFF	14.14	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F74

Deuteranopia (green-blind)

#00286F

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #231d71;
/* rgb */ color: rgb(35, 29, 113);
/* oklch */ color: oklch(30.3% 0.138 277.4);

Tailwind

colors: {
  custom: {
    50: '#6a5a9b',
    500: '#231d71',
    950: '#000000',
  },
}

SCSS

$custom: #231d71;
$custom-light: #6a5a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#231d71",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 113
  },
  "hsl": {
    "h": 244.286,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.3027,
    "c": 0.13786,
    "h": 277.4
  },
  "luminance": 0.02428
}

Semantic roles & 50–950 ramp

primary

#231D71

secondary

#9EA544

accent

#E245D7

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #231D71

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

Preview Lab → · Contrast checker → · Palette generator →