#18184E#18184E

#18184E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.9% C 0.097 H 276.8°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#18184E
RGB	rgb(24, 24, 78)
HSL	hsl(240, 53%, 20%)
HSV	hsv(240, 69%, 31%)
CMYK	cmyk(69.2%, 69.2%, 0%, 69.4%)
CIE-LAB	lab(11.94, 19.38, -33.32)
CIE-LCH	lch(11.94, 38.55, 300.18°)
OKLab	oklab(24.88% 0.0114 -0.096)
OKLCH	oklch(24.88% 0.097 276.8)
XYZ	xyz(2.0780, 1.3973, 7.3665)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.92

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18184E #4E4E18

analogous

#18334E #18184E #33184E

triadic

#18184E #4E1818 #184E18

tetradic

#18184E #4E1833 #4E4E18 #184E33

square

#18184E #4E1833 #4E4E18 #184E33

split-complementary

#18184E #4E3318 #334E18

monochromatic

#070717 #0A0A1F #18184E #26267D #3535AC

Accessibility & contrast

On white

16.41

#18184E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#18184E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18184E

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18184E	#FFFFFF	#000000	##FFFFFF
##18184E	1.00	16.41	1.28	16.41
#FFFFFF	16.41	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002250

Deuteranopia (green-blind)

#001D4D

Tritanopia (blue-blind)

#002630

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #18184e;
/* rgb */ color: rgb(24, 24, 78);
/* oklch */ color: oklch(24.9% 0.097 276.8);

Tailwind

colors: {
  custom: {
    50: '#5d5580',
    500: '#18184e',
    950: '#000000',
  },
}

SCSS

$custom: #18184e;
$custom-light: #5d5580;
$custom-dark: #000000;

JSON

{
  "hex": "#18184e",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 78
  },
  "hsl": {
    "h": 240,
    "s": 52.941,
    "l": 20
  },
  "oklch": {
    "l": 0.2488,
    "c": 0.09666,
    "h": 276.8
  },
  "luminance": 0.01398
}

Semantic roles & 50–950 ramp

primary

#18184E

secondary

#85853D

accent

#DC4BDC

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #18184E

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

Preview Lab → · Contrast checker → · Palette generator →