#183973#183973

#183973 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.107 H 260.7°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#183973
RGB	rgb(24, 57, 115)
HSL	hsl(218, 65%, 27%)
HSV	hsv(218, 79%, 45%)
CMYK	cmyk(79.1%, 50.4%, 0%, 54.9%)
CIE-LAB	lab(24.82, 10.56, -36.89)
CIE-LCH	lch(24.82, 38.37, 285.98°)
OKLab	oklab(35.53% -0.0173 -0.1059)
OKLCH	oklch(35.53% 0.107 260.7)
XYZ	xyz(4.9332, 4.3577, 16.7975)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183973 #735218

analogous

#186773 #183973 #251873

triadic

#183973 #731839 #397318

tetradic

#183973 #731867 #735218 #187325

square

#183973 #731867 #735218 #187325

split-complementary

#183973 #732518 #677318

monochromatic

#050D19 #0D2040 #183973 #2352A6 #316CD4

Accessibility & contrast

On white

11.22

#183973 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183973 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183973

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183973	#FFFFFF	#000000	##FFFFFF
##183973	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183F75

Deuteranopia (green-blind)

#003772

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183973;
/* rgb */ color: rgb(24, 57, 115);
/* oklch */ color: oklch(35.5% 0.107 260.7);

Tailwind

colors: {
  custom: {
    50: '#646e9c',
    500: '#183973',
    950: '#000000',
  },
}

SCSS

$custom: #183973;
$custom-light: #646e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#183973",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 115
  },
  "hsl": {
    "h": 218.242,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.35534,
    "c": 0.10734,
    "h": 260.7
  },
  "luminance": 0.04358
}

Semantic roles & 50–950 ramp

primary

#183973

secondary

#A8823F

accent

#AB3FE8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183973

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

Preview Lab → · Contrast checker → · Palette generator →