#183281#183281

#183281 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.137 H 265.7°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#183281
RGB	rgb(24, 50, 129)
HSL	hsl(225, 69%, 30%)
HSV	hsv(225, 81%, 51%)
CMYK	cmyk(81.4%, 61.2%, 0%, 49.4%)
CIE-LAB	lab(23.87, 21.30, -47.29)
CIE-LCH	lch(23.87, 51.86, 294.24°)
OKLab	oklab(35.16% -0.0104 -0.1367)
OKLCH	oklch(35.16% 0.137 265.7)
XYZ	xyz(5.4783, 4.0597, 21.2595)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183281 #816718

analogous

#186681 #183281 #331881

triadic

#183281 #811832 #328118

tetradic

#183281 #811866 #816718 #188133

square

#183281 #811866 #816718 #188133

split-complementary

#183281 #813318 #668118

monochromatic

#050A1A #0E1E4D #183281 #2246B5 #3961DA

Accessibility & contrast

On white

11.59

#183281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183281

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183281	#FFFFFF	#000000	##FFFFFF
##183281	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00347F

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183281;
/* rgb */ color: rgb(24, 50, 129);
/* oklch */ color: oklch(35.2% 0.137 265.7);

Tailwind

colors: {
  custom: {
    50: '#6869a6',
    500: '#183281',
    950: '#000000',
  },
}

SCSS

$custom: #183281;
$custom-light: #6869a6;
$custom-dark: #000000;

JSON

{
  "hex": "#183281",
  "rgb": {
    "r": 24,
    "g": 50,
    "b": 129
  },
  "hsl": {
    "h": 225.143,
    "s": 68.627,
    "l": 30
  },
  "oklch": {
    "l": 0.35163,
    "c": 0.13706,
    "h": 265.7
  },
  "luminance": 0.0406
}

Semantic roles & 50–950 ramp

primary

#183281

secondary

#B59840

accent

#C03CEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #183281

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

Preview Lab → · Contrast checker → · Palette generator →