#18428C#18428C

#18428C is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.6% C 0.132 H 260.8°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#18428C
RGB	rgb(24, 66, 140)
HSL	hsl(218, 71%, 32%)
HSV	hsv(218, 83%, 55%)
CMYK	cmyk(82.9%, 52.9%, 0%, 45.1%)
CIE-LAB	lab(29.37, 14.59, -45.20)
CIE-LCH	lch(29.37, 47.49, 287.89°)
OKLab	oklab(39.6% -0.0211 -0.1302)
OKLCH	oklch(39.6% 0.132 260.8)
XYZ	xyz(7.0568, 5.9832, 25.5888)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18428C #8C6218

analogous

#187C8C #18428C #28188C

triadic

#18428C #8C1842 #428C18

tetradic

#18428C #8C187C #8C6218 #188C28

square

#18428C #8C187C #8C6218 #188C28

split-complementary

#18428C #8C2818 #7C8C18

monochromatic

#061124 #0F2958 #18428C #215BC0 #4079DE

Accessibility & contrast

On white

9.56

#18428C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#18428C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18428C

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18428C	#FFFFFF	#000000	##FFFFFF
##18428C	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104B8F

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #18428c;
/* rgb */ color: rgb(24, 66, 140);
/* oklch */ color: oklch(39.6% 0.132 260.8);

Tailwind

colors: {
  custom: {
    50: '#6a75ae',
    500: '#18428c',
    950: '#000000',
  },
}

SCSS

$custom: #18428c;
$custom-light: #6a75ae;
$custom-dark: #000000;

JSON

{
  "hex": "#18428c",
  "rgb": {
    "r": 24,
    "g": 66,
    "b": 140
  },
  "hsl": {
    "h": 218.276,
    "s": 70.732,
    "l": 32.157
  },
  "oklch": {
    "l": 0.39599,
    "c": 0.13191,
    "h": 260.8
  },
  "luminance": 0.05984
}

Semantic roles & 50–950 ramp

primary

#18428C

secondary

#BF9141

accent

#AD3AED

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #18428C

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

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