#231588#231588

#231588 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.175 H 275.3°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#231588
RGB	rgb(35, 21, 136)
HSL	hsl(247, 73%, 31%)
HSV	hsv(247, 85%, 53%)
CMYK	cmyk(74.3%, 84.6%, 0%, 46.7%)
CIE-LAB	lab(18.67, 42.81, -60.22)
CIE-LCH	lch(18.67, 73.88, 305.41°)
OKLab	oklab(31.8% 0.0162 -0.1741)
OKLCH	oklch(31.8% 0.175 275.3)
XYZ	xyz(5.4038, 2.6707, 23.5185)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231588 #7A8815

analogous

#154188 #231588 #5C1588

triadic

#231588 #882315 #158823

tetradic

#231588 #881541 #7A8815 #15885C

square

#231588 #881541 #7A8815 #15885C

split-complementary

#231588 #885C15 #418815

monochromatic

#08051E #150D53 #231588 #311DBD #4C37E0

Accessibility & contrast

On white

13.69

#231588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#231588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231588

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231588	#FFFFFF	#000000	##FFFFFF
##231588	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328B

Deuteranopia (green-blind)

#002886

Tritanopia (blue-blind)

#003A50

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231588;
/* rgb */ color: rgb(35, 21, 136);
/* oklch */ color: oklch(31.8% 0.175 275.3);

Tailwind

colors: {
  custom: {
    50: '#7057ac',
    500: '#231588',
    950: '#000000',
  },
}

SCSS

$custom: #231588;
$custom-light: #7057ac;
$custom-dark: #000000;

JSON

{
  "hex": "#231588",
  "rgb": {
    "r": 35,
    "g": 21,
    "b": 136
  },
  "hsl": {
    "h": 247.304,
    "s": 73.248,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31804,
    "c": 0.17483,
    "h": 275.3
  },
  "luminance": 0.02671
}

Semantic roles & 50–950 ramp

primary

#231588

secondary

#ADBC3D

accent

#F038DA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #231588

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

Preview Lab → · Contrast checker → · Palette generator →