#18428F#18428F

#18428F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.8% C 0.136 H 261.3°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#18428F
RGB	rgb(24, 66, 143)
HSL	hsl(219, 71%, 33%)
HSV	hsv(219, 83%, 56%)
CMYK	cmyk(83.2%, 53.8%, 0%, 43.9%)
CIE-LAB	lab(29.60, 15.82, -46.68)
CIE-LCH	lch(29.60, 49.29, 288.72°)
OKLab	oklab(39.84% -0.0207 -0.1346)
OKLCH	oklch(39.84% 0.136 261.3)
XYZ	xyz(7.2810, 6.0729, 26.7697)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18428F #8F6518

analogous

#187D8F #18428F #2A188F

triadic

#18428F #8F1842 #428F18

tetradic

#18428F #8F187D #8F6518 #188F2A

square

#18428F #8F187D #8F6518 #188F2A

split-complementary

#18428F #8F2A18 #7D8F18

monochromatic

#061226 #0F2A5B #18428F #215AC3 #427ADF

Accessibility & contrast

On white

9.48

#18428F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#18428F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18428F

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18428F	#FFFFFF	#000000	##FFFFFF
##18428F	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#084B92

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #18428f;
/* rgb */ color: rgb(24, 66, 143);
/* oklch */ color: oklch(39.8% 0.136 261.3);

Tailwind

colors: {
  custom: {
    50: '#6a75b0',
    500: '#18428f',
    950: '#000000',
  },
}

SCSS

$custom: #18428f;
$custom-light: #6a75b0;
$custom-dark: #000000;

JSON

{
  "hex": "#18428f",
  "rgb": {
    "r": 24,
    "g": 66,
    "b": 143
  },
  "hsl": {
    "h": 218.824,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39842,
    "c": 0.13615,
    "h": 261.3
  },
  "luminance": 0.06074
}

Semantic roles & 50–950 ramp

primary

#18428F

secondary

#C09443

accent

#AE3AEE

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080811

muted

#7A7B80

Preview Lab

Preview with #18428F

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

Preview Lab → · Contrast checker → · Palette generator →