#10182B#10182B

#10182B is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.2% C 0.040 H 265.8°. Best body text is #FFFFFF at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#10182B
RGB	rgb(16, 24, 43)
HSL	hsl(222, 46%, 12%)
HSV	hsv(222, 63%, 17%)
CMYK	cmyk(62.8%, 44.2%, 0%, 83.1%)
CIE-LAB	lab(8.46, 3.24, -14.01)
CIE-LCH	lch(8.46, 14.38, 283.04°)
OKLab	oklab(21.2% -0.0029 -0.0395)
OKLCH	oklch(21.2% 0.04 265.8)
XYZ	xyz(0.9762, 0.9378, 2.4146)
Luminance	0.0094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10182B #2B2310

analogous

#10262B #10182B #16102B

triadic

#10182B #2B1018 #182B10

tetradic

#10182B #2B1026 #2B2310 #102B16

square

#10182B #2B1026 #2B2310 #102B16

split-complementary

#10182B #2B1610 #262B10

monochromatic

#080C16 #080C16 #10182B #213158 #314A84

Accessibility & contrast

On white

17.68

#10182B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#10182B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10182B

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10182B	#FFFFFF	#000000	##FFFFFF
##10182B	1.00	17.68	1.19	17.68
#FFFFFF	17.68	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#111A2C

Deuteranopia (green-blind)

#0E172B

Tritanopia (blue-blind)

#051C1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #10182b;
/* rgb */ color: rgb(16, 24, 43);
/* oklch */ color: oklch(21.2% 0.040 265.8);

Tailwind

colors: {
  custom: {
    50: '#505464',
    500: '#10182b',
    950: '#000000',
  },
}

SCSS

$custom: #10182b;
$custom-light: #505464;
$custom-dark: #000000;

JSON

{
  "hex": "#10182b",
  "rgb": {
    "r": 16,
    "g": 24,
    "b": 43
  },
  "hsl": {
    "h": 222.222,
    "s": 45.763,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21197,
    "c": 0.03964,
    "h": 265.8
  },
  "luminance": 0.00938
}

Semantic roles & 50–950 ramp

primary

#10182B

secondary

#645533

accent

#AF52D5

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020205

muted

#78787A

Preview Lab

Preview with #10182B

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

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