#18398A#18398A

#18398A is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.5% C 0.141 H 264.0°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#18398A
RGB	rgb(24, 57, 138)
HSL	hsl(223, 70%, 32%)
HSV	hsv(223, 83%, 54%)
CMYK	cmyk(82.6%, 58.7%, 0%, 45.9%)
CIE-LAB	lab(26.61, 20.04, -48.45)
CIE-LCH	lch(26.61, 52.43, 292.47°)
OKLab	oklab(37.45% -0.0147 -0.1399)
OKLCH	oklch(37.45% 0.141 264)
XYZ	xyz(6.4256, 4.9547, 24.6575)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18398A #8A6918

analogous

#18728A #18398A #30188A

triadic

#18398A #8A1839 #398A18

tetradic

#18398A #8A1872 #8A6918 #188A30

square

#18398A #8A1872 #8A6918 #188A30

split-complementary

#18398A #8A3018 #728A18

monochromatic

#060E22 #0F2356 #18398A #214FBE #3F6DDE

Accessibility & contrast

On white

10.55

#18398A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#18398A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18398A

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18398A	#FFFFFF	#000000	##FFFFFF
##18398A	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448D

Deuteranopia (green-blind)

#003A88

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #18398a;
/* rgb */ color: rgb(24, 57, 138);
/* oklch */ color: oklch(37.5% 0.141 264.0);

Tailwind

colors: {
  custom: {
    50: '#6a6ead',
    500: '#18398a',
    950: '#000000',
  },
}

SCSS

$custom: #18398a;
$custom-light: #6a6ead;
$custom-dark: #000000;

JSON

{
  "hex": "#18398a",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 138
  },
  "hsl": {
    "h": 222.632,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37454,
    "c": 0.14072,
    "h": 264
  },
  "luminance": 0.04955
}

Semantic roles & 50–950 ramp

primary

#18398A

secondary

#BD9940

accent

#B93BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #18398A

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

Preview Lab → · Contrast checker → · Palette generator →