#18575B#18575B

#18575B is a dark, moderate teal. Relative luminance 0.078; OKLCH L 42.0% C 0.062 H 201.2°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#18575B
RGB	rgb(24, 87, 91)
HSL	hsl(184, 58%, 23%)
HSV	hsv(184, 74%, 36%)
CMYK	cmyk(73.6%, 4.4%, 0%, 64.3%)
CIE-LAB	lab(33.49, -17.92, -8.09)
CIE-LCH	lch(33.49, 19.66, 204.30°)
OKLab	oklab(41.98% -0.0578 -0.0224)
OKLCH	oklch(41.98% 0.062 201.2)
XYZ	xyz(5.6724, 7.7653, 11.0954)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18575B #5B1C18

analogous

#185B3D #18575B #18365B

triadic

#18575B #5B1857 #575B18

tetradic

#18575B #3D185B #5B1C18 #365B18

square

#18575B #3D185B #5B1C18 #365B18

split-complementary

#18575B #5B1836 #5B3D18

monochromatic

#061718 #0B292B #18575B #25858B #32B4BC

Accessibility & contrast

On white

8.22

#18575B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#18575B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18575B

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18575B	#FFFFFF	#000000	##FFFFFF
##18575B	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50535B

Deuteranopia (green-blind)

#464C5B

Tritanopia (blue-blind)

#005B58

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #18575b;
/* rgb */ color: rgb(24, 87, 91);
/* oklch */ color: oklch(42.0% 0.062 201.2);

Tailwind

colors: {
  custom: {
    50: '#608689',
    500: '#18575b',
    950: '#000000',
  },
}

SCSS

$custom: #18575b;
$custom-light: #608689;
$custom-dark: #000000;

JSON

{
  "hex": "#18575b",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 91
  },
  "hsl": {
    "h": 183.582,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.41982,
    "c": 0.06202,
    "h": 201.2
  },
  "luminance": 0.07766
}

Semantic roles & 50–950 ramp

primary

#18575B

secondary

#92423D

accent

#5046E1

background

#F6F8F8

surface

#EBEFF0

border

#C6CACB

text

#050B0B

muted

#7A7C7C

Preview Lab

Preview with #18575B

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

Preview Lab → · Contrast checker → · Palette generator →