#183575#183575

#183575 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.8% C 0.116 H 263.3°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#183575
RGB	rgb(24, 53, 117)
HSL	hsl(221, 66%, 28%)
HSV	hsv(221, 79%, 46%)
CMYK	cmyk(79.5%, 54.7%, 0%, 54.1%)
CIE-LAB	lab(23.75, 14.23, -39.89)
CIE-LCH	lch(23.75, 42.35, 289.64°)
OKLab	oklab(34.77% -0.0135 -0.1148)
OKLCH	oklch(34.77% 0.116 263.3)
XYZ	xyz(4.8595, 4.0242, 17.3468)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183575 #755818

analogous

#186475 #183575 #291875

triadic

#183575 #751835 #357518

tetradic

#183575 #751864 #755818 #187529

square

#183575 #751864 #755818 #187529

split-complementary

#183575 #752918 #647518

monochromatic

#050C19 #0E1E42 #183575 #224CA8 #3265D5

Accessibility & contrast

On white

11.63

#183575 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183575 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183575

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183575	#FFFFFF	#000000	##FFFFFF
##183575	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#083D77

Deuteranopia (green-blind)

#003474

Tritanopia (blue-blind)

#00454F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183575;
/* rgb */ color: rgb(24, 53, 117);
/* oklch */ color: oklch(34.8% 0.116 263.3);

Tailwind

colors: {
  custom: {
    50: '#646b9d',
    500: '#183575',
    950: '#000000',
  },
}

SCSS

$custom: #183575;
$custom-light: #646b9d;
$custom-dark: #000000;

JSON

{
  "hex": "#183575",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 117
  },
  "hsl": {
    "h": 221.29,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.34765,
    "c": 0.11564,
    "h": 263.3
  },
  "luminance": 0.04025
}

Semantic roles & 50–950 ramp

primary

#183575

secondary

#AA893F

accent

#B43FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183575

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

Preview Lab → · Contrast checker → · Palette generator →