#183F2F#183F2F

#183F2F is a dark, muted teal. Relative luminance 0.040; OKLCH L 33.4% C 0.053 H 164.0°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#183F2F
RGB	rgb(24, 63, 47)
HSL	hsl(155, 45%, 17%)
HSV	hsv(155, 62%, 25%)
CMYK	cmyk(61.9%, 0%, 25.4%, 75.3%)
CIE-LAB	lab(23.52, -18.41, 5.71)
CIE-LCH	lch(23.52, 19.27, 162.77°)
OKLab	oklab(33.42% -0.051 0.0146)
OKLCH	oklch(33.42% 0.053 164)
XYZ	xyz(2.6670, 3.9542, 3.3115)
Luminance	0.0395 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F2F #3F1828

analogous

#183F1C #183F2F #183C3F

triadic

#183F2F #2F183F #3F2F18

tetradic

#183F2F #1C183F #3F1828 #3C3F18

square

#183F2F #1C183F #3F1828 #3C3F18

split-complementary

#183F2F #3F183C #3F1C18

monochromatic

#081611 #081611 #183F2F #296B50 #3A9871

Accessibility & contrast

On white

11.73

#183F2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#183F2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F2F

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F2F	#FFFFFF	#000000	##FFFFFF
##183F2F	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3A2E

Deuteranopia (green-blind)

#383630

Tritanopia (blue-blind)

#083F3B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183f2f;
/* rgb */ color: rgb(24, 63, 47);
/* oklch */ color: oklch(33.4% 0.053 164.0);

Tailwind

colors: {
  custom: {
    50: '#597467',
    500: '#183f2f',
    950: '#000000',
  },
}

SCSS

$custom: #183f2f;
$custom-light: #597467;
$custom-dark: #000000;

JSON

{
  "hex": "#183f2f",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 47
  },
  "hsl": {
    "h": 155.385,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.33416,
    "c": 0.05304,
    "h": 164
  },
  "luminance": 0.03954
}

Semantic roles & 50–950 ramp

primary

#183F2F

secondary

#753D54

accent

#5388D5

background

#F5F7F6

surface

#E9EDEB

border

#C5C8C6

text

#040806

muted

#797B7A

Preview Lab

Preview with #183F2F

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

Preview Lab → · Contrast checker → · Palette generator →