#181B2F#181B2F

#181B2F is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.0% C 0.039 H 276.4°. Best body text is #FFFFFF at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#181B2F
RGB	rgb(24, 27, 47)
HSL	hsl(232, 32%, 14%)
HSV	hsv(232, 49%, 18%)
CMYK	cmyk(48.9%, 42.6%, 0%, 81.6%)
CIE-LAB	lab(10.43, 5.07, -13.81)
CIE-LCH	lch(10.43, 14.71, 290.18°)
OKLab	oklab(22.98% 0.0043 -0.0387)
OKLCH	oklch(22.98% 0.039 276.4)
XYZ	xyz(1.2816, 1.1832, 2.8496)
Luminance	0.0118 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B2F #2F2C18

analogous

#18272F #181B2F #21182F

triadic

#181B2F #2F181B #1B2F18

tetradic

#181B2F #2F1827 #2F2C18 #182F21

square

#181B2F #2F1827 #2F2C18 #182F21

split-complementary

#181B2F #2F2118 #272F18

monochromatic

#0A0C14 #0A0C14 #181B2F #2D3258 #414A80

Accessibility & contrast

On white

16.98

#181B2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#181B2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B2F

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B2F	#FFFFFF	#000000	##FFFFFF
##181B2F	1.00	16.98	1.24	16.98
#FFFFFF	16.98	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141D30

Deuteranopia (green-blind)

#131B2F

Tritanopia (blue-blind)

#111F22

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #181b2f;
/* rgb */ color: rgb(24, 27, 47);
/* oklch */ color: oklch(23.0% 0.039 276.4);

Tailwind

colors: {
  custom: {
    50: '#565767',
    500: '#181b2f',
    950: '#000000',
  },
}

SCSS

$custom: #181b2f;
$custom-light: #565767;
$custom-dark: #000000;

JSON

{
  "hex": "#181b2f",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 47
  },
  "hsl": {
    "h": 232.174,
    "s": 32.394,
    "l": 13.922
  },
  "oklch": {
    "l": 0.22975,
    "c": 0.03896,
    "h": 276.4
  },
  "luminance": 0.01183
}

Semantic roles & 50–950 ramp

primary

#181B2F

secondary

#645F3F

accent

#BB5FC9

background

#F5F5F6

surface

#E9E9EB

border

#C5C5C6

text

#030306

muted

#78787A

Preview Lab

Preview with #181B2F

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

Preview Lab → · Contrast checker → · Palette generator →