#18403A#18403A

#18403A is a dark, muted teal. Relative luminance 0.042; OKLCH L 34.1% C 0.046 H 182.2°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX#18403A
RGBrgb(24, 64, 58)
HSLhsl(171, 45%, 17%)
HSVhsv(171, 63%, 25%)
CMYKcmyk(62.5%, 0%, 9.4%, 74.9%)
CIE-LABlab(24.21, -15.79, -0.57)
CIE-LCHlch(24.21, 15.80, 182.08°)
OKLaboklab(34.09% -0.0462 -0.0018)
OKLCHoklch(34.09% 0.046 182.2)
XYZxyz(2.9735, 4.1662, 4.6496)
Luminance0.0417 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#18403A #40181E
analogous
#184026 #18403A #183240
triadic
#18403A #3A1840 #403A18
tetradic
#18403A #261840 #40181E #324018
square
#18403A #261840 #40181E #324018
split-complementary
#18403A #401832 #402618
monochromatic
#081614 #081614 #18403A #296D62 #39998B

Accessibility & contrast

On white

11.46
#18403A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.83
#18403A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18403A
11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##18403A#FFFFFF#000000##FFFFFF
##18403A1.0011.461.8311.46
#FFFFFF11.461.0021.001.00
#0000001.8321.001.0021.00
##FFFFFF11.461.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D3C3A
Deuteranopia (green-blind)
#37383B
Tritanopia (blue-blind)
#00413E
Achromatopsia (no color)
#3A3A3A

Design tokens & code

CSS
--color: #18403a;
/* rgb */ color: rgb(24, 64, 58);
/* oklch */ color: oklch(34.1% 0.046 182.2);
Tailwind
colors: {
  custom: {
    50: '#5a7570',
    500: '#18403a',
    950: '#000000',
  },
}
SCSS
$custom: #18403a;
$custom-light: #5a7570;
$custom-dark: #000000;
JSON
{
  "hex": "#18403a",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 171,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.34088,
    "c": 0.04628,
    "h": 182.2
  },
  "luminance": 0.04166
}

Semantic roles & 50–950 ramp

primary
#18403A
secondary
#773D46
accent
#5366D5
background
#F5F7F6
surface
#E9EDEC
border
#C5C8C7
text
#040807
muted
#797B7A

Preview Lab

Preview with #18403A

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

Preview Lab → · Contrast checker → · Palette generator →

#18403A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva