#18388D#18388D

#18388D is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.146 H 264.5°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#18388D
RGB	rgb(24, 56, 141)
HSL	hsl(224, 71%, 32%)
HSV	hsv(224, 83%, 55%)
CMYK	cmyk(83%, 60.3%, 0%, 44.7%)
CIE-LAB	lab(26.58, 21.96, -50.35)
CIE-LCH	lch(26.58, 54.93, 293.56°)
OKLab	oklab(37.51% -0.0139 -0.1456)
OKLCH	oklch(37.51% 0.146 264.5)
XYZ	xyz(6.5969, 4.9448, 25.8009)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18388D #8D6D18

analogous

#18728D #18388D #33188D

triadic

#18388D #8D1838 #388D18

tetradic

#18388D #8D1872 #8D6D18 #188D33

square

#18388D #8D1872 #8D6D18 #188D33

split-complementary

#18388D #8D3318 #728D18

monochromatic

#060E24 #0F2359 #18388D #214DC1 #416CDF

Accessibility & contrast

On white

10.56

#18388D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#18388D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18388D

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18388D	#FFFFFF	#000000	##FFFFFF
##18388D	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004490

Deuteranopia (green-blind)

#003A8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18388d;
/* rgb */ color: rgb(24, 56, 141);
/* oklch */ color: oklch(37.5% 0.146 264.5);

Tailwind

colors: {
  custom: {
    50: '#6b6eaf',
    500: '#18388d',
    950: '#000000',
  },
}

SCSS

$custom: #18388d;
$custom-light: #6b6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#18388d",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 141
  },
  "hsl": {
    "h": 223.59,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37512,
    "c": 0.14623,
    "h": 264.5
  },
  "luminance": 0.04946
}

Semantic roles & 50–950 ramp

primary

#18388D

secondary

#BF9D42

accent

#BD3AEE

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #18388D

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

Preview Lab → · Contrast checker → · Palette generator →