#181A28#181A28

#181A28 is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.3% C 0.027 H 277.6°. Best body text is #FFFFFF at 17.25:1 contrast (WCAG AA passes).

Color values

HEX	#181A28
RGB	rgb(24, 26, 40)
HSL	hsl(233, 25%, 13%)
HSV	hsv(233, 40%, 16%)
CMYK	cmyk(40%, 35%, 0%, 84.3%)
CIE-LAB	lab(9.69, 3.35, -9.83)
CIE-LCH	lch(9.69, 10.38, 288.85°)
OKLab	oklab(22.27% 0.0037 -0.0272)
OKLCH	oklch(22.27% 0.027 277.6)
XYZ	xyz(1.1290, 1.0861, 2.1572)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A28 #282618

analogous

#182228 #181A28 #1E1828

triadic

#181A28 #28181A #1A2818

tetradic

#181A28 #281822 #282618 #18281E

square

#181A28 #281822 #282618 #18281E

split-complementary

#181A28 #281E18 #222818

monochromatic

#0B0C13 #0B0C13 #181A28 #2F334E #464C74

Accessibility & contrast

On white

17.25

#181A28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#181A28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A28

17.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A28	#FFFFFF	#000000	##FFFFFF
##181A28	1.00	17.25	1.22	17.25
#FFFFFF	17.25	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161B29

Deuteranopia (green-blind)

#151A28

Tritanopia (blue-blind)

#141D1F

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #181a28;
/* rgb */ color: rgb(24, 26, 40);
/* oklch */ color: oklch(22.3% 0.027 277.6);

Tailwind

colors: {
  custom: {
    50: '#555662',
    500: '#181a28',
    950: '#000000',
  },
}

SCSS

$custom: #181a28;
$custom-light: #555662;
$custom-dark: #000000;

JSON

{
  "hex": "#181a28",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 40
  },
  "hsl": {
    "h": 232.5,
    "s": 25,
    "l": 12.549
  },
  "oklch": {
    "l": 0.22269,
    "c": 0.02749,
    "h": 277.6
  },
  "luminance": 0.01086
}

Semantic roles & 50–950 ramp

primary

#181A28

secondary

#5C5840

accent

#B666C1

background

#F4F5F5

surface

#E8E9EA

border

#C4C5C6

text

#030305

muted

#787879

Preview Lab

Preview with #181A28

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

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