#18104C#18104C

#18104C is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.2% C 0.104 H 280.5°. Best body text is #FFFFFF at 17.25:1 contrast (WCAG AA passes).

Color values

HEX	#18104C
RGB	rgb(24, 16, 76)
HSL	hsl(248, 65%, 18%)
HSV	hsv(248, 79%, 30%)
CMYK	cmyk(68.4%, 78.9%, 0%, 70.2%)
CIE-LAB	lab(9.69, 24.15, -35.62)
CIE-LCH	lch(9.69, 43.04, 304.13°)
OKLab	oklab(23.19% 0.0191 -0.1027)
OKLCH	oklch(23.19% 0.104 280.5)
XYZ	xyz(1.8661, 1.0864, 6.9474)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18104C #444C10

analogous

#10264C #18104C #36104C

triadic

#18104C #4C1810 #104C18

tetradic

#18104C #4C1026 #444C10 #104C36

square

#18104C #4C1026 #444C10 #104C36

split-complementary

#18104C #4C3610 #264C10

monochromatic

#080519 #080519 #18104C #281B7F #3825B1

Accessibility & contrast

On white

17.25

#18104C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#18104C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18104C

17.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18104C	#FFFFFF	#000000	##FFFFFF
##18104C	1.00	17.25	1.22	17.25
#FFFFFF	17.25	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D4E

Deuteranopia (green-blind)

#00194B

Tritanopia (blue-blind)

#00202C

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #18104c;
/* rgb */ color: rgb(24, 16, 76);
/* oklch */ color: oklch(23.2% 0.104 280.5);

Tailwind

colors: {
  custom: {
    50: '#5d4f7f',
    500: '#18104c',
    950: '#000000',
  },
}

SCSS

$custom: #18104c;
$custom-light: #5d4f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#18104c",
  "rgb": {
    "r": 24,
    "g": 16,
    "b": 76
  },
  "hsl": {
    "h": 248,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23193,
    "c": 0.10449,
    "h": 280.5
  },
  "luminance": 0.01087
}

Semantic roles & 50–950 ramp

primary

#18104C

secondary

#7B8632

accent

#E840D2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #18104C

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

Preview Lab → · Contrast checker → · Palette generator →