#18388E#18388E

#18388E is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.148 H 264.6°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#18388E
RGB	rgb(24, 56, 142)
HSL	hsl(224, 71%, 33%)
HSV	hsv(224, 83%, 56%)
CMYK	cmyk(83.1%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(26.66, 22.36, -50.83)
CIE-LCH	lch(26.66, 55.53, 293.75°)
OKLab	oklab(37.6% -0.0139 -0.147)
OKLCH	oklch(37.6% 0.148 264.6)
XYZ	xyz(6.6716, 4.9747, 26.1945)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18388E #8E6E18

analogous

#18738E #18388E #33188E

triadic

#18388E #8E1838 #388E18

tetradic

#18388E #8E1873 #8E6E18 #188E33

square

#18388E #8E1873 #8E6E18 #188E33

split-complementary

#18388E #8E3318 #738E18

monochromatic

#060F25 #0F235A #18388E #214DC2 #416CDF

Accessibility & contrast

On white

10.53

#18388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#18388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18388E

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18388E	#FFFFFF	#000000	##FFFFFF
##18388E	1.00	10.53	2.00	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18388e;
/* rgb */ color: rgb(24, 56, 142);
/* oklch */ color: oklch(37.6% 0.148 264.6);

Tailwind

colors: {
  custom: {
    50: '#6b6eb0',
    500: '#18388e',
    950: '#000000',
  },
}

SCSS

$custom: #18388e;
$custom-light: #6b6eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#18388e",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 223.729,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37603,
    "c": 0.14762,
    "h": 264.6
  },
  "luminance": 0.04976
}

Semantic roles & 50–950 ramp

primary

#18388E

secondary

#C09E42

accent

#BD3AEE

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #18388E

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

Preview Lab → · Contrast checker → · Palette generator →