#18358E#18358E

#18358E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.151 H 265.4°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#18358E
RGB	rgb(24, 53, 142)
HSL	hsl(225, 71%, 33%)
HSV	hsv(225, 83%, 56%)
CMYK	cmyk(83.1%, 62.7%, 0%, 44.3%)
CIE-LAB	lab(25.84, 24.44, -52.18)
CIE-LCH	lch(25.84, 57.62, 295.10°)
OKLab	oklab(36.99% -0.012 -0.1509)
OKLCH	oklch(36.99% 0.151 265.4)
XYZ	xyz(6.5306, 4.6926, 26.1475)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18358E #8E7118

analogous

#18708E #18358E #36188E

triadic

#18358E #8E1835 #358E18

tetradic

#18358E #8E1870 #8E7118 #188E36

square

#18358E #8E1870 #8E7118 #188E36

split-complementary

#18358E #8E3618 #708E18

monochromatic

#060E25 #0F215A #18358E #2149C2 #4168DF

Accessibility & contrast

On white

10.83

#18358E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#18358E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18358E

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18358E	#FFFFFF	#000000	##FFFFFF
##18358E	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004391

Deuteranopia (green-blind)

#00388C

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #18358e;
/* rgb */ color: rgb(24, 53, 142);
/* oklch */ color: oklch(37.0% 0.151 265.4);

Tailwind

colors: {
  custom: {
    50: '#6b6bb0',
    500: '#18358e',
    950: '#000000',
  },
}

SCSS

$custom: #18358e;
$custom-light: #6b6bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#18358e",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 142
  },
  "hsl": {
    "h": 225.254,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36989,
    "c": 0.15143,
    "h": 265.4
  },
  "luminance": 0.04693
}

Semantic roles & 50–950 ramp

primary

#18358E

secondary

#C0A142

accent

#C23AEE

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #18358E

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

Preview Lab → · Contrast checker → · Palette generator →