#183F3A#183F3A

#183F3A is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.8% C 0.045 H 184.1°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#183F3A
RGB	rgb(24, 63, 58)
HSL	hsl(172, 45%, 17%)
HSV	hsv(172, 62%, 25%)
CMYK	cmyk(61.9%, 0%, 7.9%, 75.3%)
CIE-LAB	lab(23.85, -15.21, -1.11)
CIE-LCH	lch(23.85, 15.25, 184.15°)
OKLab	oklab(33.79% -0.0449 -0.0032)
OKLCH	oklch(33.79% 0.045 184.1)
XYZ	xyz(2.9176, 4.0544, 4.6310)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F3A #3F181D

analogous

#183F27 #183F3A #18313F

triadic

#183F3A #3A183F #3F3A18

tetradic

#183F3A #27183F #3F181D #313F18

square

#183F3A #27183F #3F181D #313F18

split-complementary

#183F3A #3F1831 #3F2718

monochromatic

#081614 #081614 #183F3A #296B63 #3A988C

Accessibility & contrast

On white

11.60

#183F3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183F3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F3A

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F3A	#FFFFFF	#000000	##FFFFFF
##183F3A	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3B3A

Deuteranopia (green-blind)

#36373B

Tritanopia (blue-blind)

#00403D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183f3a;
/* rgb */ color: rgb(24, 63, 58);
/* oklch */ color: oklch(33.8% 0.045 184.1);

Tailwind

colors: {
  custom: {
    50: '#597470',
    500: '#183f3a',
    950: '#000000',
  },
}

SCSS

$custom: #183f3a;
$custom-light: #597470;
$custom-dark: #000000;

JSON

{
  "hex": "#183f3a",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 172.308,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.33795,
    "c": 0.04502,
    "h": 184.1
  },
  "luminance": 0.04055
}

Semantic roles & 50–950 ramp

primary

#183F3A

secondary

#753D45

accent

#5364D5

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#040807

muted

#797B7A

Preview Lab

Preview with #183F3A

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

Preview Lab → · Contrast checker → · Palette generator →