#18133B#18133B

#18133B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.0% C 0.074 H 284.2°. Best body text is #FFFFFF at 17.57:1 contrast (WCAG AA passes).

Color values

HEX	#18133B
RGB	rgb(24, 19, 59)
HSL	hsl(248, 51%, 15%)
HSV	hsv(248, 68%, 23%)
CMYK	cmyk(59.3%, 67.8%, 0%, 76.9%)
CIE-LAB	lab(8.79, 15.69, -25.12)
CIE-LCH	lch(8.79, 29.61, 301.99°)
OKLab	oklab(22.02% 0.0182 -0.0719)
OKLCH	oklch(22.02% 0.074 284.2)
XYZ	xyz(1.3987, 0.9756, 4.2514)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18133B #363B13

analogous

#13223B #18133B #2C133B

triadic

#18133B #3B1813 #133B18

tetradic

#18133B #3B1322 #363B13 #133B2C

square

#18133B #3B1322 #363B13 #133B2C

split-complementary

#18133B #3B2C13 #223B13

monochromatic

#090717 #090717 #18133B #2B2269 #3E3198

Accessibility & contrast

On white

17.57

#18133B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#18133B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18133B

17.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18133B	#FFFFFF	#000000	##FFFFFF
##18133B	1.00	17.57	1.20	17.57
#FFFFFF	17.57	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A3C

Deuteranopia (green-blind)

#00183A

Tritanopia (blue-blind)

#0A1C24

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #18133b;
/* rgb */ color: rgb(24, 19, 59);
/* oklch */ color: oklch(22.0% 0.074 284.2);

Tailwind

colors: {
  custom: {
    50: '#595071',
    500: '#18133b',
    950: '#000000',
  },
}

SCSS

$custom: #18133b;
$custom-light: #595071;
$custom-dark: #000000;

JSON

{
  "hex": "#18133b",
  "rgb": {
    "r": 24,
    "g": 19,
    "b": 59
  },
  "hsl": {
    "h": 247.5,
    "s": 51.282,
    "l": 15.294
  },
  "oklch": {
    "l": 0.22016,
    "c": 0.07415,
    "h": 284.2
  },
  "luminance": 0.00976
}

Semantic roles & 50–950 ramp

primary

#18133B

secondary

#6C7336

accent

#DB4DC9

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#040208

muted

#79787B

Preview Lab

Preview with #18133B

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

Preview Lab → · Contrast checker → · Palette generator →