#18398D#18398D

#18398D is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.145 H 264.2°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#18398D
RGB	rgb(24, 57, 141)
HSL	hsl(223, 71%, 32%)
HSV	hsv(223, 83%, 55%)
CMYK	cmyk(83%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(26.86, 21.26, -49.90)
CIE-LCH	lch(26.86, 54.24, 293.08°)
OKLab	oklab(37.72% -0.0146 -0.1442)
OKLCH	oklch(37.72% 0.145 264.2)
XYZ	xyz(6.6458, 5.0427, 25.8172)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18398D #8D6C18

analogous

#18748D #18398D #32188D

triadic

#18398D #8D1839 #398D18

tetradic

#18398D #8D1874 #8D6C18 #188D32

square

#18398D #8D1874 #8D6C18 #188D32

split-complementary

#18398D #8D3218 #748D18

monochromatic

#060F24 #0F2459 #18398D #214EC1 #416DDF

Accessibility & contrast

On white

10.45

#18398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#18398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18398D

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18398D	#FFFFFF	#000000	##FFFFFF
##18398D	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003A8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18398d;
/* rgb */ color: rgb(24, 57, 141);
/* oklch */ color: oklch(37.7% 0.145 264.2);

Tailwind

colors: {
  custom: {
    50: '#6a6eaf',
    500: '#18398d',
    950: '#000000',
  },
}

SCSS

$custom: #18398d;
$custom-light: #6a6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#18398d",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 223.077,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37721,
    "c": 0.14495,
    "h": 264.2
  },
  "luminance": 0.05044
}

Semantic roles & 50–950 ramp

primary

#18398D

secondary

#BF9C42

accent

#BB3AEE

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #18398D

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

Preview Lab → · Contrast checker → · Palette generator →