#18104A#18104A

#18104A is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.0% C 0.102 H 281.1°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#18104A
RGB	rgb(24, 16, 74)
HSL	hsl(248, 64%, 18%)
HSV	hsv(248, 78%, 29%)
CMYK	cmyk(67.6%, 78.4%, 0%, 71%)
CIE-LAB	lab(9.47, 23.41, -34.59)
CIE-LCH	lch(9.47, 41.77, 304.09°)
OKLab	oklab(22.97% 0.0195 -0.0997)
OKLCH	oklch(22.97% 0.102 281.1)
XYZ	xyz(1.7976, 1.0591, 6.5869)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18104A #424A10

analogous

#10254A #18104A #35104A

triadic

#18104A #4A1810 #104A18

tetradic

#18104A #4A1025 #424A10 #104A35

square

#18104A #4A1025 #424A10 #104A35

split-complementary

#18104A #4A3510 #254A10

monochromatic

#080519 #080519 #18104A #281B7C #3926AF

Accessibility & contrast

On white

17.33

#18104A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#18104A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18104A

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18104A	#FFFFFF	#000000	##FFFFFF
##18104A	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4C

Deuteranopia (green-blind)

#001849

Tritanopia (blue-blind)

#00202B

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #18104a;
/* rgb */ color: rgb(24, 16, 74);
/* oklch */ color: oklch(23.0% 0.102 281.1);

Tailwind

colors: {
  custom: {
    50: '#5c4f7d',
    500: '#18104a',
    950: '#000000',
  },
}

SCSS

$custom: #18104a;
$custom-light: #5c4f7d;
$custom-dark: #000000;

JSON

{
  "hex": "#18104a",
  "rgb": {
    "r": 24,
    "g": 16,
    "b": 74
  },
  "hsl": {
    "h": 248.276,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.22972,
    "c": 0.10161,
    "h": 281.1
  },
  "luminance": 0.01059
}

Semantic roles & 50–950 ramp

primary

#18104A

secondary

#798432

accent

#E740D0

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #18104A

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

Preview Lab → · Contrast checker → · Palette generator →