#183375#183375

#183375 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.3% C 0.118 H 264.3°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX	#183375
RGB	rgb(24, 51, 117)
HSL	hsl(223, 66%, 28%)
HSV	hsv(223, 79%, 46%)
CMYK	cmyk(79.5%, 56.4%, 0%, 54.1%)
CIE-LAB	lab(23.15, 15.66, -40.85)
CIE-LCH	lch(23.15, 43.75, 290.98°)
OKLab	oklab(34.31% -0.0118 -0.1177)
OKLCH	oklch(34.31% 0.118 264.3)
XYZ	xyz(4.7703, 3.8457, 17.3171)
Luminance	0.0385 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183375 #755A18

analogous

#186175 #183375 #2C1875

triadic

#183375 #751833 #337518

tetradic

#183375 #751861 #755A18 #18752C

square

#183375 #751861 #755A18 #18752C

split-complementary

#183375 #752C18 #617518

monochromatic

#050B19 #0E1D42 #183375 #2249A8 #3262D5

Accessibility & contrast

On white

11.87

#183375 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183375 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183375

11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183375	#FFFFFF	#000000	##FFFFFF
##183375	1.00	11.87	1.77	11.87
#FFFFFF	11.87	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C77

Deuteranopia (green-blind)

#003374

Tritanopia (blue-blind)

#00434E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183375;
/* rgb */ color: rgb(24, 51, 117);
/* oklch */ color: oklch(34.3% 0.118 264.3);

Tailwind

colors: {
  custom: {
    50: '#646a9d',
    500: '#183375',
    950: '#000000',
  },
}

SCSS

$custom: #183375;
$custom-light: #646a9d;
$custom-dark: #000000;

JSON

{
  "hex": "#183375",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 117
  },
  "hsl": {
    "h": 222.581,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.34313,
    "c": 0.11832,
    "h": 264.3
  },
  "luminance": 0.03846
}

Semantic roles & 50–950 ramp

primary

#183375

secondary

#AA8B3F

accent

#B83FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183375

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

Preview Lab → · Contrast checker → · Palette generator →