#18187C#18187C

#18187C is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.160 H 271.3°. Best body text is #FFFFFF at 14.38:1 contrast (WCAG AA passes).

Color values

HEX	#18187C
RGB	rgb(24, 24, 124)
HSL	hsl(240, 68%, 29%)
HSV	hsv(240, 81%, 49%)
CMYK	cmyk(80.6%, 80.6%, 0%, 51.4%)
CIE-LAB	lab(17.00, 36.48, -55.41)
CIE-LCH	lch(17.00, 66.34, 303.35°)
OKLab	oklab(30.02% 0.0037 -0.1604)
OKLCH	oklch(30.02% 0.16 271.3)
XYZ	xyz(4.3402, 2.3022, 19.2805)
Luminance	0.0230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18187C #7C7C18

analogous

#184A7C #18187C #4A187C

triadic

#18187C #7C1818 #187C18

tetradic

#18187C #7C184A #7C7C18 #187C4A

square

#18187C #7C184A #7C7C18 #187C4A

split-complementary

#18187C #7C4A18 #4A7C18

monochromatic

#05051A #0E0E49 #18187C #2222AF #3636D8

Accessibility & contrast

On white

14.38

#18187C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#18187C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18187C

14.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18187C	#FFFFFF	#000000	##FFFFFF
##18187C	1.00	14.38	1.46	14.38
#FFFFFF	14.38	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7F

Deuteranopia (green-blind)

#00257A

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #18187c;
/* rgb */ color: rgb(24, 24, 124);
/* oklch */ color: oklch(30.0% 0.160 271.3);

Tailwind

colors: {
  custom: {
    50: '#6957a3',
    500: '#18187c',
    950: '#000000',
  },
}

SCSS

$custom: #18187c;
$custom-light: #6957a3;
$custom-dark: #000000;

JSON

{
  "hex": "#18187c",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 124
  },
  "hsl": {
    "h": 240,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30017,
    "c": 0.16047,
    "h": 271.3
  },
  "luminance": 0.02303
}

Semantic roles & 50–950 ramp

primary

#18187C

secondary

#B1B13F

accent

#EA3DEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #18187C

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

Preview Lab → · Contrast checker → · Palette generator →