#18178F#18178F

#18178F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.185 H 269.9°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#18178F
RGB	rgb(24, 23, 143)
HSL	hsl(241, 72%, 33%)
HSV	hsv(241, 84%, 56%)
CMYK	cmyk(83.2%, 83.9%, 0%, 43.9%)
CIE-LAB	lab(19.18, 43.37, -63.78)
CIE-LCH	lch(19.18, 77.13, 304.22°)
OKLab	oklab(32.22% -0.0002 -0.1846)
OKLCH	oklch(32.22% 0.185 269.9)
XYZ	xyz(5.6393, 2.7895, 26.2225)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18178F #8E8F17

analogous

#17528F #18178F #54178F

triadic

#18178F #8F1817 #178F18

tetradic

#18178F #8F1752 #8E8F17 #178F54

square

#18178F #8F1752 #8E8F17 #178F54

split-complementary

#18178F #8F5417 #528F17

monochromatic

#060626 #0F0F5A #18178F #211FC4 #4140E0

Accessibility & contrast

On white

13.48

#18178F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#18178F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18178F

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18178F	#FFFFFF	#000000	##FFFFFF
##18178F	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003592

Deuteranopia (green-blind)

#00288D

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #18178f;
/* rgb */ color: rgb(24, 23, 143);
/* oklch */ color: oklch(32.2% 0.185 269.9);

Tailwind

colors: {
  custom: {
    50: '#6e58b1',
    500: '#18178f',
    950: '#000000',
  },
}

SCSS

$custom: #18178f;
$custom-light: #6e58b1;
$custom-dark: #000000;

JSON

{
  "hex": "#18178f",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 143
  },
  "hsl": {
    "h": 240.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32221,
    "c": 0.18464,
    "h": 269.9
  },
  "luminance": 0.0279
}

Semantic roles & 50–950 ramp

primary

#18178F

secondary

#C0C141

accent

#EF39ED

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #18178F

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

Preview Lab → · Contrast checker → · Palette generator →