#183166#183166

#183166 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.6% C 0.098 H 263.1°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#183166
RGB	rgb(24, 49, 102)
HSL	hsl(221, 62%, 25%)
HSV	hsv(221, 76%, 40%)
CMYK	cmyk(76.5%, 52%, 0%, 60%)
CIE-LAB	lab(21.39, 10.87, -34.04)
CIE-LCH	lch(21.39, 35.73, 287.71°)
OKLab	oklab(32.61% -0.0119 -0.0977)
OKLCH	oklch(32.61% 0.098 263.1)
XYZ	xyz(3.8724, 3.3497, 13.0103)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183166 #664D18

analogous

#185866 #183166 #261866

triadic

#183166 #661831 #316618

tetradic

#183166 #661858 #664D18 #186626

square

#183166 #661858 #664D18 #186626

split-complementary

#183166 #662618 #586618

monochromatic

#060C19 #0C1934 #183166 #244998 #2F61C9

Accessibility & contrast

On white

12.57

#183166 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#183166 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183166

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183166	#FFFFFF	#000000	##FFFFFF
##183166	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133768

Deuteranopia (green-blind)

#003065

Tritanopia (blue-blind)

#003E46

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183166;
/* rgb */ color: rgb(24, 49, 102);
/* oklch */ color: oklch(32.6% 0.098 263.1);

Tailwind

colors: {
  custom: {
    50: '#616892',
    500: '#183166',
    950: '#000000',
  },
}

SCSS

$custom: #183166;
$custom-light: #616892;
$custom-dark: #000000;

JSON

{
  "hex": "#183166",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 102
  },
  "hsl": {
    "h": 220.769,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.32606,
    "c": 0.09844,
    "h": 263.1
  },
  "luminance": 0.0335
}

Semantic roles & 50–950 ramp

primary

#183166

secondary

#9C7E3E

accent

#B143E5

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #183166

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

Preview Lab → · Contrast checker → · Palette generator →