#181A6A#181A6A

#181A6A is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.2% C 0.135 H 272.6°. Best body text is #FFFFFF at 15.06:1 contrast (WCAG AA passes).

Color values

HEX	#181A6A
RGB	rgb(24, 26, 106)
HSL	hsl(239, 63%, 25%)
HSV	hsv(239, 77%, 42%)
CMYK	cmyk(77.4%, 75.5%, 0%, 58.4%)
CIE-LAB	lab(15.35, 28.77, -46.51)
CIE-LCH	lch(15.35, 54.69, 301.74°)
OKLab	oklab(28.23% 0.0062 -0.1346)
OKLCH	oklch(28.23% 0.135 272.6)
XYZ	xyz(3.3467, 1.9732, 13.8374)
Luminance	0.0197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A6A #6A6818

analogous

#18436A #181A6A #3F186A

triadic

#181A6A #6A181A #1A6A18

tetradic

#181A6A #6A1843 #6A6818 #186A3F

square

#181A6A #6A1843 #6A6818 #186A3F

split-complementary

#181A6A #6A3F18 #436A18

monochromatic

#060619 #0D0E38 #181A6A #23269C #2F32CE

Accessibility & contrast

On white

15.06

#181A6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#181A6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A6A

15.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A6A	#FFFFFF	#000000	##FFFFFF
##181A6A	1.00	15.06	1.39	15.06
#FFFFFF	15.06	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6C

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#003140

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #181a6a;
/* rgb */ color: rgb(24, 26, 106);
/* oklch */ color: oklch(28.2% 0.135 272.6);

Tailwind

colors: {
  custom: {
    50: '#645796',
    500: '#181a6a',
    950: '#000000',
  },
}

SCSS

$custom: #181a6a;
$custom-light: #645796;
$custom-dark: #000000;

JSON

{
  "hex": "#181a6a",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 106
  },
  "hsl": {
    "h": 238.537,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28229,
    "c": 0.1347,
    "h": 272.6
  },
  "luminance": 0.01974
}

Semantic roles & 50–950 ramp

primary

#181A6A

secondary

#A09D3E

accent

#E242E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181A6A

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

Preview Lab → · Contrast checker → · Palette generator →