#181881#181881

#181881 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.6% C 0.167 H 270.9°. Best body text is #FFFFFF at 14.13:1 contrast (WCAG AA passes).

Color values

HEX	#181881
RGB	rgb(24, 24, 129)
HSL	hsl(240, 69%, 30%)
HSV	hsv(240, 81%, 51%)
CMYK	cmyk(81.4%, 81.4%, 0%, 49.4%)
CIE-LAB	lab(17.61, 38.20, -57.59)
CIE-LCH	lch(17.61, 69.10, 303.56°)
OKLab	oklab(30.62% 0.0026 -0.1667)
OKLCH	oklch(30.62% 0.167 270.9)
XYZ	xyz(4.6644, 2.4319, 20.9882)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181881 #818118

analogous

#184C81 #181881 #4C1881

triadic

#181881 #811818 #188118

tetradic

#181881 #81184D #818118 #18814D

square

#181881 #81184D #818118 #18814D

split-complementary

#181881 #814C18 #4D8118

monochromatic

#05051A #0E0E4D #181881 #2222B5 #3939DA

Accessibility & contrast

On white

14.13

#181881 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#181881 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181881

14.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181881	#FFFFFF	#000000	##FFFFFF
##181881	1.00	14.13	1.49	14.13
#FFFFFF	14.13	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003084

Deuteranopia (green-blind)

#00267F

Tritanopia (blue-blind)

#00384C

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181881;
/* rgb */ color: rgb(24, 24, 129);
/* oklch */ color: oklch(30.6% 0.167 270.9);

Tailwind

colors: {
  custom: {
    50: '#6a57a7',
    500: '#181881',
    950: '#000000',
  },
}

SCSS

$custom: #181881;
$custom-light: #6a57a7;
$custom-dark: #000000;

JSON

{
  "hex": "#181881",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 129
  },
  "hsl": {
    "h": 240,
    "s": 68.627,
    "l": 30
  },
  "oklch": {
    "l": 0.30621,
    "c": 0.16676,
    "h": 270.9
  },
  "luminance": 0.02432
}

Semantic roles & 50–950 ramp

primary

#181881

secondary

#B5B540

accent

#EB3CEB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #181881

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

Preview Lab → · Contrast checker → · Palette generator →