#183380#183380

#183380 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.134 H 265.3°. Best body text is #FFFFFF at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#183380
RGB	rgb(24, 51, 128)
HSL	hsl(224, 68%, 30%)
HSV	hsv(224, 81%, 50%)
CMYK	cmyk(81.3%, 60.2%, 0%, 49.8%)
CIE-LAB	lab(24.06, 20.18, -46.34)
CIE-LCH	lch(24.06, 50.55, 293.54°)
OKLab	oklab(35.28% -0.0111 -0.1339)
OKLCH	oklch(35.28% 0.134 265.3)
XYZ	xyz(5.4554, 4.1197, 20.9256)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183380 #806518

analogous

#186780 #183380 #311880

triadic

#183380 #801833 #338018

tetradic

#183380 #801867 #806518 #188031

square

#183380 #801867 #806518 #188031

split-complementary

#183380 #803118 #678018

monochromatic

#050A1A #0E1E4C #183380 #2248B4 #3962DA

Accessibility & contrast

On white

11.51

#183380 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183380 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183380

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183380	#FFFFFF	#000000	##FFFFFF
##183380	1.00	11.51	1.82	11.51
#FFFFFF	11.51	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E83

Deuteranopia (green-blind)

#00357F

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183380;
/* rgb */ color: rgb(24, 51, 128);
/* oklch */ color: oklch(35.3% 0.134 265.3);

Tailwind

colors: {
  custom: {
    50: '#676aa6',
    500: '#183380',
    950: '#000000',
  },
}

SCSS

$custom: #183380;
$custom-light: #676aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#183380",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 128
  },
  "hsl": {
    "h": 224.423,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.35283,
    "c": 0.13433,
    "h": 265.3
  },
  "luminance": 0.0412
}

Semantic roles & 50–950 ramp

primary

#183380

secondary

#B49640

accent

#BE3DEB

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #183380

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

Preview Lab → · Contrast checker → · Palette generator →