#18337F#18337F

#18337F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.133 H 265.2°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#18337F
RGB	rgb(24, 51, 127)
HSL	hsl(224, 68%, 30%)
HSV	hsv(224, 81%, 50%)
CMYK	cmyk(81.1%, 59.8%, 0%, 50.2%)
CIE-LAB	lab(23.98, 19.78, -45.85)
CIE-LCH	lch(23.98, 49.93, 293.33°)
OKLab	oklab(35.19% -0.0111 -0.1324)
OKLCH	oklch(35.19% 0.133 265.2)
XYZ	xyz(5.3899, 4.0935, 20.5806)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18337F #7F6418

analogous

#18677F #18337F #31187F

triadic

#18337F #7F1833 #337F18

tetradic

#18337F #7F1867 #7F6418 #187F31

square

#18337F #7F1867 #7F6418 #187F31

split-complementary

#18337F #7F3118 #677F18

monochromatic

#050A1A #0E1E4C #18337F #2248B2 #3862D9

Accessibility & contrast

On white

11.55

#18337F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#18337F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18337F

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18337F	#FFFFFF	#000000	##FFFFFF
##18337F	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E82

Deuteranopia (green-blind)

#00347E

Tritanopia (blue-blind)

#004653

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #18337f;
/* rgb */ color: rgb(24, 51, 127);
/* oklch */ color: oklch(35.2% 0.133 265.2);

Tailwind

colors: {
  custom: {
    50: '#676aa5',
    500: '#18337f',
    950: '#000000',
  },
}

SCSS

$custom: #18337f;
$custom-light: #676aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#18337f",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 127
  },
  "hsl": {
    "h": 224.272,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35192,
    "c": 0.1329,
    "h": 265.2
  },
  "luminance": 0.04094
}

Semantic roles & 50–950 ramp

primary

#18337F

secondary

#B3953F

accent

#BD3DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18337F

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

Preview Lab → · Contrast checker → · Palette generator →