#23188B#23188B

#23188B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.5% C 0.176 H 274.6°. Best body text is #FFFFFF at 13.33:1 contrast (WCAG AA passes).

Color values

HEX	#23188B
RGB	rgb(35, 24, 139)
HSL	hsl(246, 71%, 32%)
HSV	hsv(246, 83%, 55%)
CMYK	cmyk(74.8%, 82.7%, 0%, 45.5%)
CIE-LAB	lab(19.53, 42.31, -60.67)
CIE-LCH	lch(19.53, 73.97, 304.89°)
OKLab	oklab(32.5% 0.0143 -0.1755)
OKLCH	oklch(32.5% 0.176 274.6)
XYZ	xyz(5.6784, 2.8741, 24.6766)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23188B #808B18

analogous

#18478B #23188B #5D188B

triadic

#23188B #8B2318 #188B23

tetradic

#23188B #8B1847 #808B18 #188B5D

square

#23188B #8B1847 #808B18 #188B5D

split-complementary

#23188B #8B5D18 #478B18

monochromatic

#090623 #160F57 #23188B #3021BF #4F3FDE

Accessibility & contrast

On white

13.33

#23188B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#23188B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23188B

13.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23188B	#FFFFFF	#000000	##FFFFFF
##23188B	1.00	13.33	1.58	13.33
#FFFFFF	13.33	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348E

Deuteranopia (green-blind)

#002A89

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #23188b;
/* rgb */ color: rgb(35, 24, 139);
/* oklch */ color: oklch(32.5% 0.176 274.6);

Tailwind

colors: {
  custom: {
    50: '#7159ae',
    500: '#23188b',
    950: '#000000',
  },
}

SCSS

$custom: #23188b;
$custom-light: #7159ae;
$custom-dark: #000000;

JSON

{
  "hex": "#23188b",
  "rgb": {
    "r": 35,
    "g": 24,
    "b": 139
  },
  "hsl": {
    "h": 245.739,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32504,
    "c": 0.17604,
    "h": 274.6
  },
  "luminance": 0.02875
}

Semantic roles & 50–950 ramp

primary

#23188B

secondary

#B2BE40

accent

#ED3ADC

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #23188B

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

Preview Lab → · Contrast checker → · Palette generator →