#181545#181545

#181545 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.4% C 0.087 H 280.1°. Best body text is #FFFFFF at 17.05:1 contrast (WCAG AA passes).

Color values

HEX	#181545
RGB	rgb(24, 21, 69)
HSL	hsl(244, 53%, 18%)
HSV	hsv(244, 70%, 27%)
CMYK	cmyk(65.2%, 69.6%, 0%, 72.9%)
CIE-LAB	lab(10.26, 18.05, -29.81)
CIE-LCH	lch(10.26, 34.85, 301.19°)
OKLab	oklab(23.38% 0.0152 -0.0857)
OKLCH	oklch(23.38% 0.087 280.1)
XYZ	xyz(1.7187, 1.1601, 5.7624)
Luminance	0.0116 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181545 #424515

analogous

#152A45 #181545 #301545

triadic

#181545 #451815 #154518

tetradic

#181545 #45152A #424515 #154530

square

#181545 #45152A #424515 #154530

split-complementary

#181545 #453015 #2A4515

monochromatic

#080717 #080717 #181545 #282374 #3932A3

Accessibility & contrast

On white

17.05

#181545 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#181545 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181545

17.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181545	#FFFFFF	#000000	##FFFFFF
##181545	1.00	17.05	1.23	17.05
#FFFFFF	17.05	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E47

Deuteranopia (green-blind)

#001A44

Tritanopia (blue-blind)

#01212A

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #181545;
/* rgb */ color: rgb(24, 21, 69);
/* oklch */ color: oklch(23.4% 0.087 280.1);

Tailwind

colors: {
  custom: {
    50: '#5b5279',
    500: '#181545',
    950: '#000000',
  },
}

SCSS

$custom: #181545;
$custom-light: #5b5279;
$custom-dark: #000000;

JSON

{
  "hex": "#181545",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 69
  },
  "hsl": {
    "h": 243.75,
    "s": 53.333,
    "l": 17.647
  },
  "oklch": {
    "l": 0.23384,
    "c": 0.08704,
    "h": 280.1
  },
  "luminance": 0.0116
}

Semantic roles & 50–950 ramp

primary

#181545

secondary

#797D39

accent

#DD4BD4

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040209

muted

#79787B

Preview Lab

Preview with #181545

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

Preview Lab → · Contrast checker → · Palette generator →