#183389#183389

#183389 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.147 H 265.8°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#183389
RGB	rgb(24, 51, 137)
HSL	hsl(226, 70%, 32%)
HSV	hsv(226, 82%, 54%)
CMYK	cmyk(82.5%, 62.8%, 0%, 46.3%)
CIE-LAB	lab(24.85, 23.83, -50.69)
CIE-LCH	lch(24.85, 56.01, 295.17°)
OKLab	oklab(36.12% -0.0109 -0.1466)
OKLCH	oklch(36.12% 0.147 265.8)
XYZ	xyz(6.0743, 4.3673, 24.1849)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183389 #896E18

analogous

#186C89 #183389 #361889

triadic

#183389 #891833 #338918

tetradic

#183389 #89186C #896E18 #188936

square

#183389 #89186C #896E18 #188936

split-complementary

#183389 #893618 #6C8918

monochromatic

#060C21 #0F2055 #183389 #2146BD #3E64DD

Accessibility & contrast

On white

11.21

#183389 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183389 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183389

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183389	#FFFFFF	#000000	##FFFFFF
##183389	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408C

Deuteranopia (green-blind)

#003687

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183389;
/* rgb */ color: rgb(24, 51, 137);
/* oklch */ color: oklch(36.1% 0.147 265.8);

Tailwind

colors: {
  custom: {
    50: '#6a6aac',
    500: '#183389',
    950: '#000000',
  },
}

SCSS

$custom: #183389;
$custom-light: #6a6aac;
$custom-dark: #000000;

JSON

{
  "hex": "#183389",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 137
  },
  "hsl": {
    "h": 225.664,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36115,
    "c": 0.14703,
    "h": 265.8
  },
  "luminance": 0.04368
}

Semantic roles & 50–950 ramp

primary

#183389

secondary

#BD9F40

accent

#C23BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #183389

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

Preview Lab → · Contrast checker → · Palette generator →