#18336B#18336B

#18336B is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.5% C 0.103 H 262.8°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#18336B
RGB	rgb(24, 51, 107)
HSL	hsl(220, 63%, 26%)
HSV	hsv(220, 78%, 42%)
CMYK	cmyk(77.6%, 52.3%, 0%, 58%)
CIE-LAB	lab(22.38, 11.51, -35.68)
CIE-LCH	lch(22.38, 37.49, 287.88°)
OKLab	oklab(33.48% -0.013 -0.1025)
OKLCH	oklch(33.48% 0.103 262.8)
XYZ	xyz(4.2134, 3.6229, 14.3843)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18336B #6B5018

analogous

#185C6B #18336B #26186B

triadic

#18336B #6B1833 #336B18

tetradic

#18336B #6B185C #6B5018 #186B26

square

#18336B #6B185C #6B5018 #186B26

split-complementary

#18336B #6B2618 #5C6B18

monochromatic

#060C19 #0D1B39 #18336B #234B9D #2E63CF

Accessibility & contrast

On white

12.18

#18336B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#18336B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18336B

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18336B	#FFFFFF	#000000	##FFFFFF
##18336B	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#123A6D

Deuteranopia (green-blind)

#00326A

Tritanopia (blue-blind)

#00404A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #18336b;
/* rgb */ color: rgb(24, 51, 107);
/* oklch */ color: oklch(33.5% 0.103 262.8);

Tailwind

colors: {
  custom: {
    50: '#626a96',
    500: '#18336b',
    950: '#000000',
  },
}

SCSS

$custom: #18336b;
$custom-light: #626a96;
$custom-dark: #000000;

JSON

{
  "hex": "#18336b",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 107
  },
  "hsl": {
    "h": 220.482,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.33481,
    "c": 0.10334,
    "h": 262.8
  },
  "luminance": 0.03623
}

Semantic roles & 50–950 ramp

primary

#18336B

secondary

#A1813E

accent

#B141E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #18336B

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

Preview Lab → · Contrast checker → · Palette generator →