#231B96#231B96

#231B96 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.2% C 0.187 H 273.2°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#231B96
RGB	rgb(35, 27, 150)
HSL	hsl(244, 69%, 35%)
HSV	hsv(244, 82%, 59%)
CMYK	cmyk(76.7%, 82%, 0%, 41.2%)
CIE-LAB	lab(21.37, 44.33, -64.47)
CIE-LCH	lch(21.37, 78.24, 304.51°)
OKLab	oklab(34.16% 0.0103 -0.1865)
OKLCH	oklch(34.16% 0.187 273.2)
XYZ	xyz(6.5883, 3.3425, 29.1462)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B96 #8E961B

analogous

#1B5196 #231B96 #601B96

triadic

#231B96 #96231B #1B9623

tetradic

#231B96 #961B51 #8E961B #1B9660

square

#231B96 #961B51 #8E961B #1B9660

split-complementary

#231B96 #96601B #51961B

monochromatic

#0B082E #171262 #231B96 #2F24CA #564DDF

Accessibility & contrast

On white

12.59

#231B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#231B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B96

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B96	#FFFFFF	#000000	##FFFFFF
##231B96	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003999

Deuteranopia (green-blind)

#002D94

Tritanopia (blue-blind)

#004259

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #231b96;
/* rgb */ color: rgb(35, 27, 150);
/* oklch */ color: oklch(34.2% 0.187 273.2);

Tailwind

colors: {
  custom: {
    50: '#735bb6',
    500: '#231b96',
    950: '#000000',
  },
}

SCSS

$custom: #231b96;
$custom-light: #735bb6;
$custom-dark: #000000;

JSON

{
  "hex": "#231b96",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 150
  },
  "hsl": {
    "h": 243.902,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.34161,
    "c": 0.1868,
    "h": 273.2
  },
  "luminance": 0.03343
}

Semantic roles & 50–950 ramp

primary

#231B96

secondary

#B9C14C

accent

#EC3BE1

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #231B96

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

Preview Lab → · Contrast checker → · Palette generator →