#18398E#18398E

#18398E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.146 H 264.3°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#18398E
RGB	rgb(24, 57, 142)
HSL	hsl(223, 71%, 33%)
HSV	hsv(223, 83%, 56%)
CMYK	cmyk(83.1%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(26.94, 21.67, -50.38)
CIE-LCH	lch(26.94, 54.84, 293.27°)
OKLab	oklab(37.81% -0.0145 -0.1456)
OKLCH	oklch(37.81% 0.146 264.3)
XYZ	xyz(6.7206, 5.0726, 26.2109)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18398E #8E6D18

analogous

#18748E #18398E #32188E

triadic

#18398E #8E1839 #398E18

tetradic

#18398E #8E1874 #8E6D18 #188E32

square

#18398E #8E1874 #8E6D18 #188E32

split-complementary

#18398E #8E3218 #748E18

monochromatic

#060F25 #0F245A #18398E #214EC2 #416DDF

Accessibility & contrast

On white

10.42

#18398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#18398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18398E

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18398E	#FFFFFF	#000000	##FFFFFF
##18398E	1.00	10.42	2.01	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #18398e;
/* rgb */ color: rgb(24, 57, 142);
/* oklch */ color: oklch(37.8% 0.146 264.3);

Tailwind

colors: {
  custom: {
    50: '#6b6eb0',
    500: '#18398e',
    950: '#000000',
  },
}

SCSS

$custom: #18398e;
$custom-light: #6b6eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#18398e",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 223.22,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37811,
    "c": 0.14634,
    "h": 264.3
  },
  "luminance": 0.05073
}

Semantic roles & 50–950 ramp

primary

#18398E

secondary

#C09D42

accent

#BC3AEE

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #18398E

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

Preview Lab → · Contrast checker → · Palette generator →