#231D58#231D58

#231D58 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.8% C 0.102 H 282.0°. Best body text is #FFFFFF at 15.13:1 contrast (WCAG AA passes).

Color values

HEX	#231D58
RGB	rgb(35, 29, 88)
HSL	hsl(246, 50%, 23%)
HSV	hsv(246, 67%, 35%)
CMYK	cmyk(60.2%, 67%, 0%, 65.5%)
CIE-LAB	lab(15.17, 21.76, -34.81)
CIE-LCH	lch(15.17, 41.05, 302.01°)
OKLab	oklab(27.78% 0.0213 -0.1)
OKLCH	oklch(27.78% 0.102 282)
XYZ	xyz(2.8934, 1.9405, 9.4527)
Luminance	0.0194 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D58 #52581D

analogous

#1D3458 #231D58 #401D58

triadic

#231D58 #58231D #1D5823

tetradic

#231D58 #581D34 #52581D #1D5840

square

#231D58 #581D34 #52581D #1D5840

split-complementary

#231D58 #58401D #34581D

monochromatic

#090817 #110E2A #231D58 #352C86 #483BB4

Accessibility & contrast

On white

15.13

#231D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#231D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D58

15.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D58	#FFFFFF	#000000	##FFFFFF
##231D58	1.00	15.13	1.39	15.13
#FFFFFF	15.13	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285A

Deuteranopia (green-blind)

#002457

Tritanopia (blue-blind)

#092B37

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #231d58;
/* rgb */ color: rgb(35, 29, 88);
/* oklch */ color: oklch(27.8% 0.102 282.0);

Tailwind

colors: {
  custom: {
    50: '#645988',
    500: '#231d58',
    950: '#000000',
  },
}

SCSS

$custom: #231d58;
$custom-light: #645988;
$custom-dark: #000000;

JSON

{
  "hex": "#231d58",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 88
  },
  "hsl": {
    "h": 246.102,
    "s": 50.427,
    "l": 22.941
  },
  "oklch": {
    "l": 0.27778,
    "c": 0.10222,
    "h": 282
  },
  "luminance": 0.01941
}

Semantic roles & 50–950 ramp

primary

#231D58

secondary

#868D44

accent

#DA4ECC

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030B

muted

#7A787C

Preview Lab

Preview with #231D58

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

Preview Lab → · Contrast checker → · Palette generator →