#18583B#18583B

#18583B is a dark, moderate teal. Relative luminance 0.075; OKLCH L 41.2% C 0.081 H 159.6°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#18583B
RGB	rgb(24, 88, 59)
HSL	hsl(153, 57%, 22%)
HSV	hsv(153, 73%, 35%)
CMYK	cmyk(72.7%, 0%, 33%, 65.5%)
CIE-LAB	lab(32.89, -27.81, 11.11)
CIE-LCH	lch(32.89, 29.95, 158.23°)
OKLab	oklab(41.18% -0.0758 0.0282)
OKLCH	oklch(41.18% 0.081 159.6)
XYZ	xyz(4.6554, 7.4889, 5.3370)
Luminance	0.0749 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18583B #581835

analogous

#18581B #18583B #185558

triadic

#18583B #3B1858 #583B18

tetradic

#18583B #1B1858 #581835 #555818

square

#18583B #1B1858 #581835 #555818

split-complementary

#18583B #581855 #581B18

monochromatic

#071810 #0B281B #18583B #25885B #32B87B

Accessibility & contrast

On white

8.41

#18583B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#18583B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18583B

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18583B	#FFFFFF	#000000	##FFFFFF
##18583B	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575139

Deuteranopia (green-blind)

#4F4B3D

Tritanopia (blue-blind)

#005850

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #18583b;
/* rgb */ color: rgb(24, 88, 59);
/* oklch */ color: oklch(41.2% 0.081 159.6);

Tailwind

colors: {
  custom: {
    50: '#5e8871',
    500: '#18583b',
    950: '#000000',
  },
}

SCSS

$custom: #18583b;
$custom-light: #5e8871;
$custom-dark: #000000;

JSON

{
  "hex": "#18583b",
  "rgb": {
    "r": 24,
    "g": 88,
    "b": 59
  },
  "hsl": {
    "h": 152.813,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.41184,
    "c": 0.08088,
    "h": 159.6
  },
  "luminance": 0.07489
}

Semantic roles & 50–950 ramp

primary

#18583B

secondary

#8F3D62

accent

#478DE0

background

#F5F8F6

surface

#EAF0EC

border

#C6CBC7

text

#050B07

muted

#797C7A

Preview Lab

Preview with #18583B

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

Preview Lab → · Contrast checker → · Palette generator →