#183775#183775

#183775 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.2% C 0.113 H 262.3°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#183775
RGB	rgb(24, 55, 117)
HSL	hsl(220, 66%, 28%)
HSV	hsv(220, 79%, 46%)
CMYK	cmyk(79.5%, 53%, 0%, 54.1%)
CIE-LAB	lab(24.36, 12.81, -38.91)
CIE-LCH	lch(24.36, 40.96, 288.22°)
OKLab	oklab(35.23% -0.0152 -0.1119)
OKLCH	oklch(35.23% 0.113 262.3)
XYZ	xyz(4.9526, 4.2104, 17.3778)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183775 #755618

analogous

#186575 #183775 #281875

triadic

#183775 #751837 #377518

tetradic

#183775 #751865 #755618 #187528

square

#183775 #751865 #755618 #187528

split-complementary

#183775 #752818 #657518

monochromatic

#050C19 #0E1F42 #183775 #224FA8 #3269D5

Accessibility & contrast

On white

11.40

#183775 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183775 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183775

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183775	#FFFFFF	#000000	##FFFFFF
##183775	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#103E77

Deuteranopia (green-blind)

#003674

Tritanopia (blue-blind)

#004650

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183775;
/* rgb */ color: rgb(24, 55, 117);
/* oklch */ color: oklch(35.2% 0.113 262.3);

Tailwind

colors: {
  custom: {
    50: '#646d9d',
    500: '#183775',
    950: '#000000',
  },
}

SCSS

$custom: #183775;
$custom-light: #646d9d;
$custom-dark: #000000;

JSON

{
  "hex": "#183775",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 117
  },
  "hsl": {
    "h": 220,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.35225,
    "c": 0.11297,
    "h": 262.3
  },
  "luminance": 0.04211
}

Semantic roles & 50–950 ramp

primary

#183775

secondary

#AA863F

accent

#B03FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183775

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

Preview Lab → · Contrast checker → · Palette generator →