#18403E#18403E

#18403E is a dark, muted teal. Relative luminance 0.042; OKLCH L 34.2% C 0.045 H 190.8°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#18403E
RGB	rgb(24, 64, 62)
HSL	hsl(177, 45%, 17%)
HSV	hsv(177, 63%, 25%)
CMYK	cmyk(62.5%, 0%, 3.1%, 74.9%)
CIE-LAB	lab(24.35, -14.53, -3.03)
CIE-LCH	lch(24.35, 14.84, 191.76°)
OKLab	oklab(34.24% -0.0441 -0.0084)
OKLCH	oklch(34.24% 0.045 190.8)
XYZ	xyz(3.0792, 4.2085, 5.2065)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18403E #40181A

analogous

#18402A #18403E #182E40

triadic

#18403E #3E1840 #403E18

tetradic

#18403E #2A1840 #40181A #2E4018

square

#18403E #2A1840 #40181A #2E4018

split-complementary

#18403E #40182E #402A18

monochromatic

#081616 #081616 #18403E #296D69 #399994

Accessibility & contrast

On white

11.40

#18403E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#18403E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18403E

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18403E	#FFFFFF	#000000	##FFFFFF
##18403E	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3D3E

Deuteranopia (green-blind)

#36383E

Tritanopia (blue-blind)

#00423F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18403e;
/* rgb */ color: rgb(24, 64, 62);
/* oklch */ color: oklch(34.2% 0.045 190.8);

Tailwind

colors: {
  custom: {
    50: '#5a7573',
    500: '#18403e',
    950: '#000000',
  },
}

SCSS

$custom: #18403e;
$custom-light: #5a7573;
$custom-dark: #000000;

JSON

{
  "hex": "#18403e",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 62
  },
  "hsl": {
    "h": 177,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.34243,
    "c": 0.0449,
    "h": 190.8
  },
  "luminance": 0.04209
}

Semantic roles & 50–950 ramp

primary

#18403E

secondary

#773D40

accent

#5359D5

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#040808

muted

#797B7B

Preview Lab

Preview with #18403E

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

Preview Lab → · Contrast checker → · Palette generator →