#181B7C#181B7C

#181B7C is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.4% C 0.158 H 270.9°. Best body text is #FFFFFF at 14.13:1 contrast (WCAG AA passes).

Color values

HEX	#181B7C
RGB	rgb(24, 27, 124)
HSL	hsl(238, 68%, 29%)
HSV	hsv(238, 81%, 49%)
CMYK	cmyk(80.6%, 78.2%, 0%, 51.4%)
CIE-LAB	lab(17.61, 34.73, -54.40)
CIE-LCH	lch(17.61, 64.54, 302.55°)
OKLab	oklab(30.45% 0.0025 -0.1575)
OKLCH	oklch(30.45% 0.158 270.9)
XYZ	xyz(4.4055, 2.4328, 19.3023)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B7C #7C7918

analogous

#184D7C #181B7C #47187C

triadic

#181B7C #7C181B #1B7C18

tetradic

#181B7C #7C184D #7C7918 #187C47

square

#181B7C #7C184D #7C7918 #187C47

split-complementary

#181B7C #7C4718 #4D7C18

monochromatic

#05061A #0E1049 #181B7C #2226AF #363BD8

Accessibility & contrast

On white

14.13

#181B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#181B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B7C

14.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B7C	#FFFFFF	#000000	##FFFFFF
##181B7C	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)

#00307F

Deuteranopia (green-blind)

#00267A

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181b7c;
/* rgb */ color: rgb(24, 27, 124);
/* oklch */ color: oklch(30.4% 0.158 270.9);

Tailwind

colors: {
  custom: {
    50: '#6959a3',
    500: '#181b7c',
    950: '#000000',
  },
}

SCSS

$custom: #181b7c;
$custom-light: #6959a3;
$custom-dark: #000000;

JSON

{
  "hex": "#181b7c",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 124
  },
  "hsl": {
    "h": 238.2,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30449,
    "c": 0.15755,
    "h": 270.9
  },
  "luminance": 0.02433
}

Semantic roles & 50–950 ramp

primary

#181B7C

secondary

#B1AD3F

accent

#E53DEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181B7C

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

Preview Lab → · Contrast checker → · Palette generator →