#183576#183576

#183576 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.8% C 0.117 H 263.4°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#183576
RGB	rgb(24, 53, 118)
HSL	hsl(221, 66%, 28%)
HSV	hsv(221, 80%, 46%)
CMYK	cmyk(79.7%, 55.1%, 0%, 53.7%)
CIE-LAB	lab(23.83, 14.65, -40.40)
CIE-LCH	lch(23.83, 42.97, 289.93°)
OKLab	oklab(34.85% -0.0134 -0.1163)
OKLCH	oklch(34.85% 0.117 263.4)
XYZ	xyz(4.9186, 4.0478, 17.6581)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183576 #765918

analogous

#186476 #183576 #2A1876

triadic

#183576 #761835 #357618

tetradic

#183576 #761864 #765918 #18762A

square

#183576 #761864 #765918 #18762A

split-complementary

#183576 #762A18 #647618

monochromatic

#050B19 #0E1E43 #183576 #224CA9 #3365D5

Accessibility & contrast

On white

11.60

#183576 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183576 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183576

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183576	#FFFFFF	#000000	##FFFFFF
##183576	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#063D78

Deuteranopia (green-blind)

#003575

Tritanopia (blue-blind)

#004550

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183576;
/* rgb */ color: rgb(24, 53, 118);
/* oklch */ color: oklch(34.8% 0.117 263.4);

Tailwind

colors: {
  custom: {
    50: '#656b9e',
    500: '#183576',
    950: '#000000',
  },
}

SCSS

$custom: #183576;
$custom-light: #656b9e;
$custom-dark: #000000;

JSON

{
  "hex": "#183576",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 118
  },
  "hsl": {
    "h": 221.489,
    "s": 66.197,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34849,
    "c": 0.11712,
    "h": 263.4
  },
  "luminance": 0.04048
}

Semantic roles & 50–950 ramp

primary

#183576

secondary

#AB8A3F

accent

#B53FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183576

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

Preview Lab → · Contrast checker → · Palette generator →