#231F90#231F90

#231F90 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.0% C 0.176 H 273.3°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#231F90
RGB	rgb(35, 31, 144)
HSL	hsl(242, 65%, 34%)
HSV	hsv(242, 78%, 56%)
CMYK	cmyk(75.7%, 78.5%, 0%, 43.5%)
CIE-LAB	lab(21.40, 40.25, -60.71)
CIE-LCH	lch(21.40, 72.84, 303.55°)
OKLab	oklab(33.98% 0.0102 -0.1756)
OKLCH	oklch(33.98% 0.176 273.3)
XYZ	xyz(6.2155, 3.3503, 26.6992)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F90 #8C901F

analogous

#1F5490 #231F90 #5C1F90

triadic

#231F90 #90231F #1F9023

tetradic

#231F90 #901F54 #8C901F #1F905C

square

#231F90 #901F54 #8C901F #1F905C

split-complementary

#231F90 #905C1F #54901F

monochromatic

#0B092B #17145E #231F90 #2F2AC2 #5550D9

Accessibility & contrast

On white

12.57

#231F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#231F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F90

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F90	#FFFFFF	#000000	##FFFFFF
##231F90	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003993

Deuteranopia (green-blind)

#002E8E

Tritanopia (blue-blind)

#004157

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #231f90;
/* rgb */ color: rgb(35, 31, 144);
/* oklch */ color: oklch(34.0% 0.176 273.3);

Tailwind

colors: {
  custom: {
    50: '#715db2',
    500: '#231f90',
    950: '#000000',
  },
}

SCSS

$custom: #231f90;
$custom-light: #715db2;
$custom-dark: #000000;

JSON

{
  "hex": "#231f90",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 144
  },
  "hsl": {
    "h": 242.124,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.33977,
    "c": 0.17595,
    "h": 273.3
  },
  "luminance": 0.03351
}

Semantic roles & 50–950 ramp

primary

#231F90

secondary

#B8BC4E

accent

#E840E2

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231F90

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

Preview Lab → · Contrast checker → · Palette generator →