#18555B#18555B

#18555B is a dark, moderate teal. Relative luminance 0.074; OKLCH L 41.4% C 0.061 H 204.5°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#18555B
RGB	rgb(24, 85, 91)
HSL	hsl(185, 58%, 23%)
HSV	hsv(185, 74%, 36%)
CMYK	cmyk(73.6%, 6.6%, 0%, 64.3%)
CIE-LAB	lab(32.80, -16.81, -9.13)
CIE-LCH	lch(32.80, 19.12, 208.51°)
OKLab	oklab(41.43% -0.0555 -0.0253)
OKLCH	oklch(41.43% 0.061 204.5)
XYZ	xyz(5.5127, 7.4459, 11.0422)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18555B #5B1E18

analogous

#185B3F #18555B #18345B

triadic

#18555B #5B1855 #555B18

tetradic

#18555B #3F185B #5B1E18 #345B18

square

#18555B #3F185B #5B1E18 #345B18

split-complementary

#18555B #5B1834 #5B3F18

monochromatic

#061718 #0B282B #18555B #25828B #32AFBC

Accessibility & contrast

On white

8.44

#18555B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#18555B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18555B

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18555B	#FFFFFF	#000000	##FFFFFF
##18555B	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E515B

Deuteranopia (green-blind)

#444A5B

Tritanopia (blue-blind)

#005957

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #18555b;
/* rgb */ color: rgb(24, 85, 91);
/* oklch */ color: oklch(41.4% 0.061 204.5);

Tailwind

colors: {
  custom: {
    50: '#608589',
    500: '#18555b',
    950: '#000000',
  },
}

SCSS

$custom: #18555b;
$custom-light: #608589;
$custom-dark: #000000;

JSON

{
  "hex": "#18555b",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 91
  },
  "hsl": {
    "h": 185.373,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.41425,
    "c": 0.061,
    "h": 204.5
  },
  "luminance": 0.07447
}

Semantic roles & 50–950 ramp

primary

#18555B

secondary

#92453D

accent

#5446E1

background

#F6F8F8

surface

#EBEFF0

border

#C6CACB

text

#050B0B

muted

#7A7C7C

Preview Lab

Preview with #18555B

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

Preview Lab → · Contrast checker → · Palette generator →