#231B97#231B97

#231B97 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.3% C 0.188 H 273.1°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#231B97
RGB	rgb(35, 27, 151)
HSL	hsl(244, 70%, 35%)
HSV	hsv(244, 82%, 59%)
CMYK	cmyk(76.8%, 82.1%, 0%, 40.8%)
CIE-LAB	lab(21.49, 44.65, -64.89)
CIE-LCH	lch(21.49, 78.76, 304.53°)
OKLab	oklab(34.28% 0.0101 -0.1877)
OKLCH	oklch(34.28% 0.188 273.1)
XYZ	xyz(6.6691, 3.3749, 29.5721)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B97 #8F971B

analogous

#1B5197 #231B97 #611B97

triadic

#231B97 #97231B #1B9723

tetradic

#231B97 #971B51 #8F971B #1B9761

square

#231B97 #971B51 #8F971B #1B9761

split-complementary

#231B97 #97611B #51971B

monochromatic

#0B082F #171263 #231B97 #2F24CB #574DDF

Accessibility & contrast

On white

12.54

#231B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#231B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B97

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B97	#FFFFFF	#000000	##FFFFFF
##231B97	1.00	12.54	1.68	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00399A

Deuteranopia (green-blind)

#002D95

Tritanopia (blue-blind)

#00425A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #231b97;
/* rgb */ color: rgb(35, 27, 151);
/* oklch */ color: oklch(34.3% 0.188 273.1);

Tailwind

colors: {
  custom: {
    50: '#735bb7',
    500: '#231b97',
    950: '#000000',
  },
}

SCSS

$custom: #231b97;
$custom-light: #735bb7;
$custom-dark: #000000;

JSON

{
  "hex": "#231b97",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 151
  },
  "hsl": {
    "h": 243.871,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.3428,
    "c": 0.188,
    "h": 273.1
  },
  "luminance": 0.03376
}

Semantic roles & 50–950 ramp

primary

#231B97

secondary

#BAC14C

accent

#EC3BE1

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #231B97

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

Preview Lab → · Contrast checker → · Palette generator →