#183F41#183F41

#183F41 is a dark, muted teal. Relative luminance 0.041; OKLCH L 34.1% C 0.044 H 199.9°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#183F41
RGB	rgb(24, 63, 65)
HSL	hsl(183, 46%, 17%)
HSV	hsv(183, 63%, 25%)
CMYK	cmyk(63.1%, 3.1%, 0%, 74.5%)
CIE-LAB	lab(24.10, -12.95, -5.39)
CIE-LCH	lch(24.10, 14.03, 202.59°)
OKLab	oklab(34.08% -0.0412 -0.0149)
OKLCH	oklch(34.08% 0.044 199.9)
XYZ	xyz(3.1079, 4.1306, 5.6335)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F41 #411A18

analogous

#18412F #183F41 #182A41

triadic

#183F41 #41183F #3F4118

tetradic

#183F41 #2F1841 #411A18 #2A4118

square

#183F41 #2F1841 #411A18 #2A4118

split-complementary

#183F41 #41182A #412F18

monochromatic

#081616 #081616 #183F41 #296A6E #39969A

Accessibility & contrast

On white

11.50

#183F41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#183F41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F41

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F41	#FFFFFF	#000000	##FFFFFF
##183F41	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3C41

Deuteranopia (green-blind)

#343741

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183f41;
/* rgb */ color: rgb(24, 63, 65);
/* oklch */ color: oklch(34.1% 0.044 199.9);

Tailwind

colors: {
  custom: {
    50: '#5a7475',
    500: '#183f41',
    950: '#000000',
  },
}

SCSS

$custom: #183f41;
$custom-light: #5a7475;
$custom-dark: #000000;

JSON

{
  "hex": "#183f41",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 65
  },
  "hsl": {
    "h": 182.927,
    "s": 46.067,
    "l": 17.451
  },
  "oklch": {
    "l": 0.34077,
    "c": 0.04383,
    "h": 199.9
  },
  "luminance": 0.04131
}

Semantic roles & 50–950 ramp

primary

#183F41

secondary

#78403D

accent

#5852D6

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #183F41

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

Preview Lab → · Contrast checker → · Palette generator →