#18187D#18187D

#18187D is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.162 H 271.2°. Best body text is #FFFFFF at 14.33:1 contrast (WCAG AA passes).

Color values

HEX	#18187D
RGB	rgb(24, 24, 125)
HSL	hsl(240, 68%, 29%)
HSV	hsv(240, 81%, 49%)
CMYK	cmyk(80.8%, 80.8%, 0%, 51%)
CIE-LAB	lab(17.12, 36.82, -55.85)
CIE-LCH	lch(17.12, 66.90, 303.40°)
OKLab	oklab(30.14% 0.0034 -0.1617)
OKLCH	oklch(30.14% 0.162 271.2)
XYZ	xyz(4.4037, 2.3276, 19.6152)
Luminance	0.0233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18187D #7D7D18

analogous

#184B7D #18187D #4B187D

triadic

#18187D #7D1818 #187D18

tetradic

#18187D #7D184B #7D7D18 #187D4B

square

#18187D #7D184B #7D7D18 #187D4B

split-complementary

#18187D #7D4B18 #4B7D18

monochromatic

#05051A #0E0E4A #18187D #2222B0 #3737D9

Accessibility & contrast

On white

14.33

#18187D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#18187D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18187D

14.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18187D	#FFFFFF	#000000	##FFFFFF
##18187D	1.00	14.33	1.47	14.33
#FFFFFF	14.33	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F80

Deuteranopia (green-blind)

#00257B

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #18187d;
/* rgb */ color: rgb(24, 24, 125);
/* oklch */ color: oklch(30.1% 0.162 271.2);

Tailwind

colors: {
  custom: {
    50: '#6957a4',
    500: '#18187d',
    950: '#000000',
  },
}

SCSS

$custom: #18187d;
$custom-light: #6957a4;
$custom-dark: #000000;

JSON

{
  "hex": "#18187d",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 125
  },
  "hsl": {
    "h": 240,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.30137,
    "c": 0.16174,
    "h": 271.2
  },
  "luminance": 0.02328
}

Semantic roles & 50–950 ramp

primary

#18187D

secondary

#B2B23F

accent

#EB3DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #18187D

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

Preview Lab → · Contrast checker → · Palette generator →