#18104D#18104D

#18104D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.3% C 0.106 H 280.2°. Best body text is #FFFFFF at 17.21:1 contrast (WCAG AA passes).

Color values

HEX	#18104D
RGB	rgb(24, 16, 77)
HSL	hsl(248, 66%, 18%)
HSV	hsv(248, 79%, 30%)
CMYK	cmyk(68.8%, 79.2%, 0%, 69.8%)
CIE-LAB	lab(9.80, 24.51, -36.13)
CIE-LCH	lch(9.80, 43.66, 304.15°)
OKLab	oklab(23.31% 0.0188 -0.1042)
OKLCH	oklch(23.31% 0.106 280.2)
XYZ	xyz(1.9011, 1.1005, 7.1320)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.68

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18104D #454D10

analogous

#10264D #18104D #36104D

triadic

#18104D #4D1810 #104D18

tetradic

#18104D #4D1026 #454D10 #104D36

square

#18104D #4D1026 #454D10 #104D36

split-complementary

#18104D #4D3610 #264D10

monochromatic

#080519 #08051A #18104D #281B80 #3825B2

Accessibility & contrast

On white

17.21

#18104D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#18104D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18104D

17.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18104D	#FFFFFF	#000000	##FFFFFF
##18104D	1.00	17.21	1.22	17.21
#FFFFFF	17.21	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D4F

Deuteranopia (green-blind)

#00194C

Tritanopia (blue-blind)

#00212D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #18104d;
/* rgb */ color: rgb(24, 16, 77);
/* oklch */ color: oklch(23.3% 0.106 280.2);

Tailwind

colors: {
  custom: {
    50: '#5d4f80',
    500: '#18104d',
    950: '#000000',
  },
}

SCSS

$custom: #18104d;
$custom-light: #5d4f80;
$custom-dark: #000000;

JSON

{
  "hex": "#18104d",
  "rgb": {
    "r": 24,
    "g": 16,
    "b": 77
  },
  "hsl": {
    "h": 247.869,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.23305,
    "c": 0.10592,
    "h": 280.2
  },
  "luminance": 0.01101
}

Semantic roles & 50–950 ramp

primary

#18104D

secondary

#7C8732

accent

#E93FD2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #18104D

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

Preview Lab → · Contrast checker → · Palette generator →