#18188B#18188B

#18188B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.179 H 270.1°. Best body text is #FFFFFF at 13.62:1 contrast (WCAG AA passes).

Color values

HEX	#18188B
RGB	rgb(24, 24, 139)
HSL	hsl(240, 71%, 32%)
HSV	hsv(240, 83%, 55%)
CMYK	cmyk(82.7%, 82.7%, 0%, 45.5%)
CIE-LAB	lab(18.85, 41.56, -61.83)
CIE-LCH	lch(18.85, 74.50, 303.91°)
OKLab	oklab(31.84% 0.0004 -0.179)
OKLCH	oklch(31.84% 0.179 270.1)
XYZ	xyz(5.3619, 2.7109, 24.6618)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18188B #8B8B18

analogous

#18528B #18188B #52188B

triadic

#18188B #8B1818 #188B18

tetradic

#18188B #8B1852 #8B8B18 #188B52

square

#18188B #8B1852 #8B8B18 #188B52

split-complementary

#18188B #8B5218 #528B18

monochromatic

#060623 #0F0F57 #18188B #2121BF #3F3FDE

Accessibility & contrast

On white

13.62

#18188B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#18188B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18188B

13.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18188B	#FFFFFF	#000000	##FFFFFF
##18188B	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)

#00348E

Deuteranopia (green-blind)

#002889

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #18188b;
/* rgb */ color: rgb(24, 24, 139);
/* oklch */ color: oklch(31.8% 0.179 270.1);

Tailwind

colors: {
  custom: {
    50: '#6d58ae',
    500: '#18188b',
    950: '#000000',
  },
}

SCSS

$custom: #18188b;
$custom-light: #6d58ae;
$custom-dark: #000000;

JSON

{
  "hex": "#18188b",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 139
  },
  "hsl": {
    "h": 240,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.31844,
    "c": 0.17903,
    "h": 270.1
  },
  "luminance": 0.02712
}

Semantic roles & 50–950 ramp

primary

#18188B

secondary

#BEBE40

accent

#ED3AED

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080310

muted

#7B787F

Preview Lab

Preview with #18188B

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

Preview Lab → · Contrast checker → · Palette generator →