#18403B#18403B

#18403B is a dark, muted teal. Relative luminance 0.042; OKLCH L 34.1% C 0.046 H 184.3°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#18403B
RGB	rgb(24, 64, 59)
HSL	hsl(173, 45%, 17%)
HSV	hsv(173, 63%, 25%)
CMYK	cmyk(62.5%, 0%, 7.8%, 74.9%)
CIE-LAB	lab(24.25, -15.48, -1.19)
CIE-LCH	lch(24.25, 15.52, 184.39°)
OKLab	oklab(34.13% -0.0457 -0.0034)
OKLCH	oklch(34.13% 0.046 184.3)
XYZ	xyz(2.9992, 4.1765, 4.7849)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18403B #40181D

analogous

#184027 #18403B #183140

triadic

#18403B #3B1840 #403B18

tetradic

#18403B #271840 #40181D #314018

square

#18403B #271840 #40181D #314018

split-complementary

#18403B #401831 #402718

monochromatic

#081615 #081615 #18403B #296D64 #39998D

Accessibility & contrast

On white

11.44

#18403B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#18403B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18403B

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18403B	#FFFFFF	#000000	##FFFFFF
##18403B	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3C3B

Deuteranopia (green-blind)

#36383C

Tritanopia (blue-blind)

#00413E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #18403b;
/* rgb */ color: rgb(24, 64, 59);
/* oklch */ color: oklch(34.1% 0.046 184.3);

Tailwind

colors: {
  custom: {
    50: '#5a7570',
    500: '#18403b',
    950: '#000000',
  },
}

SCSS

$custom: #18403b;
$custom-light: #5a7570;
$custom-dark: #000000;

JSON

{
  "hex": "#18403b",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 59
  },
  "hsl": {
    "h": 172.5,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.34126,
    "c": 0.04583,
    "h": 184.3
  },
  "luminance": 0.04177
}

Semantic roles & 50–950 ramp

primary

#18403B

secondary

#773D44

accent

#5363D5

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#040807

muted

#797B7A

Preview Lab

Preview with #18403B

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

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