#18188A#18188A

#18188A is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.178 H 270.2°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#18188A
RGB	rgb(24, 24, 138)
HSL	hsl(240, 70%, 32%)
HSV	hsv(240, 83%, 54%)
CMYK	cmyk(82.6%, 82.6%, 0%, 45.9%)
CIE-LAB	lab(18.72, 41.23, -61.41)
CIE-LCH	lch(18.72, 73.97, 303.88°)
OKLab	oklab(31.72% 0.0006 -0.1778)
OKLCH	oklch(31.72% 0.178 270.2)
XYZ	xyz(5.2892, 2.6818, 24.2787)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18188A #8A8A18

analogous

#18518A #18188A #51188A

triadic

#18188A #8A1818 #188A18

tetradic

#18188A #8A1851 #8A8A18 #188A51

square

#18188A #8A1851 #8A8A18 #188A51

split-complementary

#18188A #8A5118 #518A18

monochromatic

#060622 #0F0F56 #18188A #2121BE #3F3FDE

Accessibility & contrast

On white

13.67

#18188A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#18188A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18188A

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18188A	#FFFFFF	#000000	##FFFFFF
##18188A	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338D

Deuteranopia (green-blind)

#002888

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #18188a;
/* rgb */ color: rgb(24, 24, 138);
/* oklch */ color: oklch(31.7% 0.178 270.2);

Tailwind

colors: {
  custom: {
    50: '#6d58ad',
    500: '#18188a',
    950: '#000000',
  },
}

SCSS

$custom: #18188a;
$custom-light: #6d58ad;
$custom-dark: #000000;

JSON

{
  "hex": "#18188a",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 138
  },
  "hsl": {
    "h": 240,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.31721,
    "c": 0.17782,
    "h": 270.2
  },
  "luminance": 0.02682
}

Semantic roles & 50–950 ramp

primary

#18188A

secondary

#BDBD40

accent

#ED3BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #18188A

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

Preview Lab → · Contrast checker → · Palette generator →