#18366F#18366F

#18366F is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.5% C 0.105 H 261.7°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#18366F
RGB	rgb(24, 54, 111)
HSL	hsl(219, 64%, 26%)
HSV	hsv(219, 78%, 44%)
CMYK	cmyk(78.4%, 51.4%, 0%, 56.5%)
CIE-LAB	lab(23.60, 11.03, -36.29)
CIE-LCH	lch(23.60, 37.93, 286.91°)
OKLab	oklab(34.51% -0.0152 -0.1042)
OKLCH	oklch(34.51% 0.105 261.7)
XYZ	xyz(4.5641, 3.9797, 15.5635)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18366F #6F5118

analogous

#18626F #18366F #26186F

triadic

#18366F #6F1836 #366F18

tetradic

#18366F #6F1862 #6F5118 #186F26

square

#18366F #6F1862 #6F5118 #186F26

split-complementary

#18366F #6F2618 #626F18

monochromatic

#050C19 #0D1E3D #18366F #234EA1 #2F67D2

Accessibility & contrast

On white

11.69

#18366F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#18366F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18366F

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18366F	#FFFFFF	#000000	##FFFFFF
##18366F	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#153C71

Deuteranopia (green-blind)

#00346E

Tritanopia (blue-blind)

#00444D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #18366f;
/* rgb */ color: rgb(24, 54, 111);
/* oklch */ color: oklch(34.5% 0.105 261.7);

Tailwind

colors: {
  custom: {
    50: '#636c99',
    500: '#18366f',
    950: '#000000',
  },
}

SCSS

$custom: #18366f;
$custom-light: #636c99;
$custom-dark: #000000;

JSON

{
  "hex": "#18366f",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 111
  },
  "hsl": {
    "h": 219.31,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.34509,
    "c": 0.10535,
    "h": 261.7
  },
  "luminance": 0.0398
}

Semantic roles & 50–950 ramp

primary

#18366F

secondary

#A5813E

accent

#AE40E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #18366F

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

Preview Lab → · Contrast checker → · Palette generator →