#231D4E#231D4E

#231D4E is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.087 H 284.5°. Best body text is #FFFFFF at 15.47:1 contrast (WCAG AA passes).

Color values

HEX	#231D4E
RGB	rgb(35, 29, 78)
HSL	hsl(247, 46%, 21%)
HSV	hsv(247, 63%, 31%)
CMYK	cmyk(55.1%, 62.8%, 0%, 69.4%)
CIE-LAB	lab(14.32, 18.14, -29.41)
CIE-LCH	lch(14.32, 34.56, 301.67°)
OKLab	oklab(26.89% 0.0217 -0.0841)
OKLCH	oklch(26.89% 0.087 284.5)
XYZ	xyz(2.5072, 1.7860, 7.4189)
Luminance	0.0179 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.54

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D4E #484E1D

analogous

#1D2F4E #231D4E #3B1D4E

triadic

#231D4E #4E231D #1D4E23

tetradic

#231D4E #4E1D2F #484E1D #1D4E3B

square

#231D4E #4E1D2F #484E1D #1D4E3B

split-complementary

#231D4E #4E3B1D #2F4E1D

monochromatic

#0A0816 #0F0C21 #231D4E #372E7B #4B3EA7

Accessibility & contrast

On white

15.47

#231D4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#231D4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D4E

15.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D4E	#FFFFFF	#000000	##FFFFFF
##231D4E	1.00	15.47	1.36	15.47
#FFFFFF	15.47	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002650

Deuteranopia (green-blind)

#00234D

Tritanopia (blue-blind)

#132832

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #231d4e;
/* rgb */ color: rgb(35, 29, 78);
/* oklch */ color: oklch(26.9% 0.087 284.5);

Tailwind

colors: {
  custom: {
    50: '#625980',
    500: '#231d4e',
    950: '#000000',
  },
}

SCSS

$custom: #231d4e;
$custom-light: #625980;
$custom-dark: #000000;

JSON

{
  "hex": "#231d4e",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 78
  },
  "hsl": {
    "h": 247.347,
    "s": 45.794,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26885,
    "c": 0.08684,
    "h": 284.5
  },
  "luminance": 0.01786
}

Semantic roles & 50–950 ramp

primary

#231D4E

secondary

#7B8344

accent

#D552C5

background

#F6F5F7

surface

#EBE9EE

border

#C6C5C9

text

#05030A

muted

#7A787C

Preview Lab

Preview with #231D4E

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

Preview Lab → · Contrast checker → · Palette generator →