#18366C#18366C

#18366C is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.3% C 0.101 H 261.1°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#18366C
RGB	rgb(24, 54, 108)
HSL	hsl(219, 64%, 26%)
HSV	hsv(219, 78%, 42%)
CMYK	cmyk(77.8%, 50%, 0%, 57.6%)
CIE-LAB	lab(23.39, 9.78, -34.71)
CIE-LCH	lch(23.39, 36.06, 285.74°)
OKLab	oklab(34.27% -0.0157 -0.0996)
OKLCH	oklch(34.27% 0.101 261.1)
XYZ	xyz(4.4017, 3.9147, 14.7081)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18366C #6C4E18

analogous

#18606C #18366C #24186C

triadic

#18366C #6C1836 #366C18

tetradic

#18366C #6C1860 #6C4E18 #186C24

square

#18366C #6C1860 #6C4E18 #186C24

split-complementary

#18366C #6C2418 #606C18

monochromatic

#060D19 #0D1D3A #18366C #234F9E #2E68D0

Accessibility & contrast

On white

11.78

#18366C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#18366C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18366C

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18366C	#FFFFFF	#000000	##FFFFFF
##18366C	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#193C6E

Deuteranopia (green-blind)

#03346B

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #18366c;
/* rgb */ color: rgb(24, 54, 108);
/* oklch */ color: oklch(34.3% 0.101 261.1);

Tailwind

colors: {
  custom: {
    50: '#626c96',
    500: '#18366c',
    950: '#000000',
  },
}

SCSS

$custom: #18366c;
$custom-light: #626c96;
$custom-dark: #000000;

JSON

{
  "hex": "#18366c",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 108
  },
  "hsl": {
    "h": 218.571,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.34274,
    "c": 0.10083,
    "h": 261.1
  },
  "luminance": 0.03915
}

Semantic roles & 50–950 ramp

primary

#18366C

secondary

#A27E3E

accent

#AC41E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #18366C

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

Preview Lab → · Contrast checker → · Palette generator →