#18337D#18337D

#18337D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.0% C 0.130 H 265.0°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#18337D
RGB	rgb(24, 51, 125)
HSL	hsl(224, 68%, 29%)
HSV	hsv(224, 81%, 49%)
CMYK	cmyk(80.8%, 59.2%, 0%, 51%)
CIE-LAB	lab(23.81, 18.96, -44.86)
CIE-LCH	lch(23.81, 48.71, 292.91°)
OKLab	oklab(35.01% -0.0112 -0.1295)
OKLCH	oklch(35.01% 0.13 265)
XYZ	xyz(5.2609, 4.0419, 19.9010)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18337D #7D6218

analogous

#18667D #18337D #2F187D

triadic

#18337D #7D1833 #337D18

tetradic

#18337D #7D1866 #7D6218 #187D2F

square

#18337D #7D1866 #7D6218 #187D2F

split-complementary

#18337D #7D2F18 #667D18

monochromatic

#050A1A #0E1E4A #18337D #2248B0 #3762D9

Accessibility & contrast

On white

11.61

#18337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#18337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18337D

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18337D	#FFFFFF	#000000	##FFFFFF
##18337D	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E80

Deuteranopia (green-blind)

#00347C

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #18337d;
/* rgb */ color: rgb(24, 51, 125);
/* oklch */ color: oklch(35.0% 0.130 265.0);

Tailwind

colors: {
  custom: {
    50: '#676aa3',
    500: '#18337d',
    950: '#000000',
  },
}

SCSS

$custom: #18337d;
$custom-light: #676aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#18337d",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 223.96,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35013,
    "c": 0.13002,
    "h": 265
  },
  "luminance": 0.04043
}

Semantic roles & 50–950 ramp

primary

#18337D

secondary

#B2933F

accent

#BC3DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #18337D

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

Preview Lab → · Contrast checker → · Palette generator →