#18428A#18428A

#18428A is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.4% C 0.129 H 260.5°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#18428A
RGB	rgb(24, 66, 138)
HSL	hsl(218, 70%, 32%)
HSV	hsv(218, 83%, 54%)
CMYK	cmyk(82.6%, 52.2%, 0%, 45.9%)
CIE-LAB	lab(29.22, 13.77, -44.20)
CIE-LCH	lch(29.22, 46.30, 287.30°)
OKLab	oklab(39.44% -0.0213 -0.1273)
OKLCH	oklch(39.44% 0.129 260.5)
XYZ	xyz(6.9107, 5.9248, 24.8192)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18428A #8A6018

analogous

#187B8A #18428A #27188A

triadic

#18428A #8A1842 #428A18

tetradic

#18428A #8A187B #8A6018 #188A27

square

#18428A #8A187B #8A6018 #188A27

split-complementary

#18428A #8A2718 #7B8A18

monochromatic

#061022 #0F2956 #18428A #215BBE #3F79DE

Accessibility & contrast

On white

9.61

#18428A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#18428A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18428A

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18428A	#FFFFFF	#000000	##FFFFFF
##18428A	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134A8D

Deuteranopia (green-blind)

#004089

Tritanopia (blue-blind)

#00535F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #18428a;
/* rgb */ color: rgb(24, 66, 138);
/* oklch */ color: oklch(39.4% 0.129 260.5);

Tailwind

colors: {
  custom: {
    50: '#6975ad',
    500: '#18428a',
    950: '#000000',
  },
}

SCSS

$custom: #18428a;
$custom-light: #6975ad;
$custom-dark: #000000;

JSON

{
  "hex": "#18428a",
  "rgb": {
    "r": 24,
    "g": 66,
    "b": 138
  },
  "hsl": {
    "h": 217.895,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.39439,
    "c": 0.12907,
    "h": 260.5
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#18428A

secondary

#BD8F40

accent

#AB3BED

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #18428A

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

Preview Lab → · Contrast checker → · Palette generator →