#18104E#18104E

#18104E is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.4% C 0.107 H 280.0°. Best body text is #FFFFFF at 17.17:1 contrast (WCAG AA passes).

Color values

HEX	#18104E
RGB	rgb(24, 16, 78)
HSL	hsl(248, 66%, 18%)
HSV	hsv(248, 79%, 31%)
CMYK	cmyk(69.2%, 79.5%, 0%, 69.4%)
CIE-LAB	lab(9.91, 24.87, -36.64)
CIE-LCH	lch(9.91, 44.29, 304.17°)
OKLab	oklab(23.42% 0.0186 -0.1057)
OKLCH	oklch(23.42% 0.107 280)
XYZ	xyz(1.9367, 1.1147, 7.3193)
Luminance	0.0112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.82

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18104E #464E10

analogous

#10274E #18104E #37104E

triadic

#18104E #4E1810 #104E18

tetradic

#18104E #4E1027 #464E10 #104E37

square

#18104E #4E1027 #464E10 #104E37

split-complementary

#18104E #4E3710 #274E10

monochromatic

#080519 #08061B #18104E #281A81 #3725B4

Accessibility & contrast

On white

17.17

#18104E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#18104E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18104E

17.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18104E	#FFFFFF	#000000	##FFFFFF
##18104E	1.00	17.17	1.22	17.17
#FFFFFF	17.17	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E50

Deuteranopia (green-blind)

#00194D

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #18104e;
/* rgb */ color: rgb(24, 16, 78);
/* oklch */ color: oklch(23.4% 0.107 280.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18104e",
  "rgb": {
    "r": 24,
    "g": 16,
    "b": 78
  },
  "hsl": {
    "h": 247.742,
    "s": 65.957,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23417,
    "c": 0.10734,
    "h": 280
  },
  "luminance": 0.01115
}

Semantic roles & 50–950 ramp

primary

#18104E

secondary

#7D8832

accent

#E93FD3

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #18104E

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

Preview Lab → · Contrast checker → · Palette generator →