#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
RGB	rgb(24, 64, 58)
HSL	hsl(171, 45%, 17%)
HSV	hsv(171, 63%, 25%)
CMYK	cmyk(62.5%, 0%, 9.4%, 74.9%)
CIE-LAB	lab(24.21, -15.79, -0.57)
CIE-LCH	lch(24.21, 15.80, 182.08°)
OKLab	oklab(34.09% -0.0462 -0.0018)
OKLCH	oklch(34.09% 0.046 182.2)
XYZ	xyz(2.9735, 4.1662, 4.6496)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	teal

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
##18403A	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

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 →