#231D9F#231D9F

#231D9F is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.5% C 0.196 H 272.2°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#231D9F
RGB	rgb(35, 29, 159)
HSL	hsl(243, 69%, 37%)
HSV	hsv(243, 82%, 62%)
CMYK	cmyk(78%, 81.8%, 0%, 37.6%)
CIE-LAB	lab(22.79, 46.20, -67.64)
CIE-LCH	lch(22.79, 81.91, 304.34°)
OKLab	oklab(35.46% 0.0075 -0.1957)
OKLCH	oklch(35.46% 0.196 272.2)
XYZ	xyz(7.3884, 3.7385, 33.1264)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D9F #999F1D

analogous

#1D589F #231D9F #641D9F

triadic

#231D9F #9F231D #1D9F23

tetradic

#231D9F #9F1D58 #999F1D #1D9F64

square

#231D9F #9F1D58 #999F1D #1D9F64

split-complementary

#231D9F #9F641D #589F1D

monochromatic

#0C0A37 #18146B #231D9F #2E26D3 #5D56E0

Accessibility & contrast

On white

12.02

#231D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#231D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D9F

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D9F	#FFFFFF	#000000	##FFFFFF
##231D9F	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA3

Deuteranopia (green-blind)

#00309D

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231d9f;
/* rgb */ color: rgb(35, 29, 159);
/* oklch */ color: oklch(35.5% 0.196 272.2);

Tailwind

colors: {
  custom: {
    50: '#755dbd',
    500: '#231d9f',
    950: '#000000',
  },
}

SCSS

$custom: #231d9f;
$custom-light: #755dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#231d9f",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 159
  },
  "hsl": {
    "h": 242.769,
    "s": 69.149,
    "l": 36.863
  },
  "oklch": {
    "l": 0.35462,
    "c": 0.19588,
    "h": 272.2
  },
  "luminance": 0.03739
}

Semantic roles & 50–950 ramp

primary

#231D9F

secondary

#BEC454

accent

#EC3CE4

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231D9F

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

Preview Lab → · Contrast checker → · Palette generator →