#183F45#183F45

#183F45 is a dark, muted teal. Relative luminance 0.042; OKLCH L 34.3% C 0.045 H 208.9°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#183F45
RGB	rgb(24, 63, 69)
HSL	hsl(188, 48%, 18%)
HSV	hsv(188, 65%, 27%)
CMYK	cmyk(65.2%, 8.7%, 0%, 72.9%)
CIE-LAB	lab(24.25, -11.59, -7.81)
CIE-LCH	lch(24.25, 13.97, 213.99°)
OKLab	oklab(34.25% -0.0392 -0.0216)
OKLCH	oklch(34.25% 0.045 208.9)
XYZ	xyz(3.2279, 4.1786, 6.2655)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F45 #451E18

analogous

#184534 #183F45 #182845

triadic

#183F45 #45183F #3F4518

tetradic

#183F45 #341845 #451E18 #284518

square

#183F45 #341845 #451E18 #284518

split-complementary

#183F45 #451828 #453418

monochromatic

#081517 #081618 #183F45 #286872 #3892A0

Accessibility & contrast

On white

11.44

#183F45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183F45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F45

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F45	#FFFFFF	#000000	##FFFFFF
##183F45	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)

#393D45

Deuteranopia (green-blind)

#333745

Tritanopia (blue-blind)

#004241

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183f45;
/* rgb */ color: rgb(24, 63, 69);
/* oklch */ color: oklch(34.3% 0.045 208.9);

Tailwind

colors: {
  custom: {
    50: '#5a7478',
    500: '#183f45',
    950: '#000000',
  },
}

SCSS

$custom: #183f45;
$custom-light: #5a7478;
$custom-dark: #000000;

JSON

{
  "hex": "#183f45",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 69
  },
  "hsl": {
    "h": 188,
    "s": 48.387,
    "l": 18.235
  },
  "oklch": {
    "l": 0.34253,
    "c": 0.04478,
    "h": 208.9
  },
  "luminance": 0.04179
}

Semantic roles & 50–950 ramp

primary

#183F45

secondary

#7C453D

accent

#6250D8

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040809

muted

#797B7B

Preview Lab

Preview with #183F45

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

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