#183366#183366

#183366 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.1% C 0.096 H 261.7°. Best body text is #FFFFFF at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#183366
RGB	rgb(24, 51, 102)
HSL	hsl(219, 62%, 25%)
HSV	hsv(219, 76%, 40%)
CMYK	cmyk(76.5%, 50%, 0%, 60%)
CIE-LAB	lab(22.02, 9.43, -33.03)
CIE-LCH	lch(22.02, 34.35, 285.93°)
OKLab	oklab(33.09% -0.0138 -0.0947)
OKLCH	oklch(33.09% 0.096 261.7)
XYZ	xyz(3.9579, 3.5207, 13.0388)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183366 #664B18

analogous

#185A66 #183366 #241866

triadic

#183366 #661833 #336618

tetradic

#183366 #66185A #664B18 #186624

square

#183366 #66185A #664B18 #186624

split-complementary

#183366 #662418 #5A6618

monochromatic

#060C19 #0C1A34 #183366 #244C98 #2F65C9

Accessibility & contrast

On white

12.32

#183366 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#183366 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183366

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183366	#FFFFFF	#000000	##FFFFFF
##183366	1.00	12.32	1.70	12.32
#FFFFFF	12.32	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183968

Deuteranopia (green-blind)

#053165

Tritanopia (blue-blind)

#003F47

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183366;
/* rgb */ color: rgb(24, 51, 102);
/* oklch */ color: oklch(33.1% 0.096 261.7);

Tailwind

colors: {
  custom: {
    50: '#616a92',
    500: '#183366',
    950: '#000000',
  },
}

SCSS

$custom: #183366;
$custom-light: #616a92;
$custom-dark: #000000;

JSON

{
  "hex": "#183366",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 102
  },
  "hsl": {
    "h": 219.231,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.33086,
    "c": 0.09572,
    "h": 261.7
  },
  "luminance": 0.03521
}

Semantic roles & 50–950 ramp

primary

#183366

secondary

#9C7B3E

accent

#AD43E5

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #183366

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

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