#183363#183363

#183363 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 32.9% C 0.091 H 260.9°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#183363
RGB	rgb(24, 51, 99)
HSL	hsl(218, 61%, 24%)
HSV	hsv(218, 76%, 39%)
CMYK	cmyk(75.8%, 48.5%, 0%, 61.2%)
CIE-LAB	lab(21.81, 8.18, -31.42)
CIE-LCH	lch(21.81, 32.46, 284.60°)
OKLab	oklab(32.86% -0.0144 -0.09)
OKLCH	oklch(32.86% 0.091 260.9)
XYZ	xyz(3.8118, 3.4623, 12.2694)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183363 #634818

analogous

#185963 #183363 #231863

triadic

#183363 #631833 #336318

tetradic

#183363 #631859 #634818 #186323

square

#183363 #631859 #634818 #186323

split-complementary

#183363 #632318 #596318

monochromatic

#060D19 #0C1A32 #183363 #244C94 #3066C6

Accessibility & contrast

On white

12.41

#183363 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#183363 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183363

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183363	#FFFFFF	#000000	##FFFFFF
##183363	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3865

Deuteranopia (green-blind)

#0B3162

Tritanopia (blue-blind)

#003E46

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #183363;
/* rgb */ color: rgb(24, 51, 99);
/* oklch */ color: oklch(32.9% 0.091 260.9);

Tailwind

colors: {
  custom: {
    50: '#606a90',
    500: '#183363',
    950: '#000000',
  },
}

SCSS

$custom: #183363;
$custom-light: #606a90;
$custom-dark: #000000;

JSON

{
  "hex": "#183363",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 99
  },
  "hsl": {
    "h": 218.4,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.32855,
    "c": 0.09111,
    "h": 260.9
  },
  "luminance": 0.03463
}

Semantic roles & 50–950 ramp

primary

#183363

secondary

#99783E

accent

#AA44E4

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #183363

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

Preview Lab → · Contrast checker → · Palette generator →