#231688#231688

#231688 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.174 H 275.2°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#231688
RGB	rgb(35, 22, 136)
HSL	hsl(247, 72%, 31%)
HSV	hsv(247, 84%, 53%)
CMYK	cmyk(74.3%, 83.8%, 0%, 46.7%)
CIE-LAB	lab(18.84, 42.33, -59.95)
CIE-LCH	lch(18.84, 73.39, 305.23°)
OKLab	oklab(31.92% 0.0159 -0.1733)
OKLCH	oklch(31.92% 0.174 275.2)
XYZ	xyz(5.4225, 2.7082, 23.5247)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231688 #7B8816

analogous

#164288 #231688 #5C1688

triadic

#231688 #882316 #168823

tetradic

#231688 #881642 #7B8816 #16885C

square

#231688 #881642 #7B8816 #16885C

split-complementary

#231688 #885C16 #428816

monochromatic

#08051F #150D53 #231688 #311FBD #4C39DF

Accessibility & contrast

On white

13.62

#231688 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#231688 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231688

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231688	#FFFFFF	#000000	##FFFFFF
##231688	1.00	13.62	1.54	13.62
#FFFFFF	13.62	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002986

Tritanopia (blue-blind)

#003A50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231688;
/* rgb */ color: rgb(35, 22, 136);
/* oklch */ color: oklch(31.9% 0.174 275.2);

Tailwind

colors: {
  custom: {
    50: '#7057ac',
    500: '#231688',
    950: '#000000',
  },
}

SCSS

$custom: #231688;
$custom-light: #7057ac;
$custom-dark: #000000;

JSON

{
  "hex": "#231688",
  "rgb": {
    "r": 35,
    "g": 22,
    "b": 136
  },
  "hsl": {
    "h": 246.842,
    "s": 72.152,
    "l": 30.98
  },
  "oklch": {
    "l": 0.31915,
    "c": 0.17405,
    "h": 275.2
  },
  "luminance": 0.02709
}

Semantic roles & 50–950 ramp

primary

#231688

secondary

#AEBC3E

accent

#EF39DA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #231688

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

Preview Lab → · Contrast checker → · Palette generator →