#183066#183066

#183066 is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.4% C 0.100 H 263.7°. Best body text is #FFFFFF at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#183066
RGB	rgb(24, 48, 102)
HSL	hsl(222, 62%, 25%)
HSV	hsv(222, 76%, 40%)
CMYK	cmyk(76.5%, 52.9%, 0%, 60%)
CIE-LAB	lab(21.08, 11.59, -34.54)
CIE-LCH	lch(21.08, 36.43, 288.56°)
OKLab	oklab(32.37% -0.0109 -0.0992)
OKLCH	oklch(32.37% 0.1 263.7)
XYZ	xyz(3.8311, 3.2670, 12.9965)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183066 #664E18

analogous

#185766 #183066 #271866

triadic

#183066 #661830 #306618

tetradic

#183066 #661857 #664E18 #186627

square

#183066 #661857 #664E18 #186627

split-complementary

#183066 #662718 #576618

monochromatic

#060C19 #0C1934 #183066 #244798 #2F5FC9

Accessibility & contrast

On white

12.70

#183066 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#183066 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183066

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183066	#FFFFFF	#000000	##FFFFFF
##183066	1.00	12.70	1.65	12.70
#FFFFFF	12.70	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#103668

Deuteranopia (green-blind)

#002F65

Tritanopia (blue-blind)

#003D46

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183066;
/* rgb */ color: rgb(24, 48, 102);
/* oklch */ color: oklch(32.4% 0.100 263.7);

Tailwind

colors: {
  custom: {
    50: '#616792',
    500: '#183066',
    950: '#000000',
  },
}

SCSS

$custom: #183066;
$custom-light: #616792;
$custom-dark: #000000;

JSON

{
  "hex": "#183066",
  "rgb": {
    "r": 24,
    "g": 48,
    "b": 102
  },
  "hsl": {
    "h": 221.538,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.3237,
    "c": 0.09981,
    "h": 263.7
  },
  "luminance": 0.03267
}

Semantic roles & 50–950 ramp

primary

#183066

secondary

#9C7F3E

accent

#B343E5

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #183066

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

Preview Lab → · Contrast checker → · Palette generator →