#18186C#18186C

#18186C is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.1% C 0.140 H 272.8°. Best body text is #FFFFFF at 15.15:1 contrast (WCAG AA passes).

Color values

HEX	#18186C
RGB	rgb(24, 24, 108)
HSL	hsl(240, 64%, 26%)
HSV	hsv(240, 78%, 42%)
CMYK	cmyk(77.8%, 77.8%, 0%, 57.6%)
CIE-LAB	lab(15.11, 30.78, -48.20)
CIE-LCH	lch(15.11, 57.19, 302.56°)
OKLab	oklab(28.13% 0.0069 -0.1395)
OKLCH	oklch(28.13% 0.14 272.8)
XYZ	xyz(3.4092, 1.9298, 14.3773)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18186C #6C6C18

analogous

#18426C #18186C #42186C

triadic

#18186C #6C1818 #186C18

tetradic

#18186C #6C1842 #6C6C18 #186C42

square

#18186C #6C1842 #6C6C18 #186C42

split-complementary

#18186C #6C4218 #426C18

monochromatic

#060619 #0D0D3A #18186C #23239E #2E2ED0

Accessibility & contrast

On white

15.15

#18186C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#18186C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18186C

15.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18186C	#FFFFFF	#000000	##FFFFFF
##18186C	1.00	15.15	1.39	15.15
#FFFFFF	15.15	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6E

Deuteranopia (green-blind)

#00226B

Tritanopia (blue-blind)

#003040

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #18186c;
/* rgb */ color: rgb(24, 24, 108);
/* oklch */ color: oklch(28.1% 0.140 272.8);

Tailwind

colors: {
  custom: {
    50: '#655697',
    500: '#18186c',
    950: '#000000',
  },
}

SCSS

$custom: #18186c;
$custom-light: #655697;
$custom-dark: #000000;

JSON

{
  "hex": "#18186c",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 108
  },
  "hsl": {
    "h": 240,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28131,
    "c": 0.13964,
    "h": 272.8
  },
  "luminance": 0.0193
}

Semantic roles & 50–950 ramp

primary

#18186C

secondary

#A2A23E

accent

#E741E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #18186C

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

Preview Lab → · Contrast checker → · Palette generator →