#1B5B59#1B5B59

#1B5B59 is a dark, moderate teal. Relative luminance 0.084; OKLCH L 43.1% C 0.063 H 192.1°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B59
RGB	rgb(27, 91, 89)
HSL	hsl(178, 54%, 23%)
HSV	hsv(178, 70%, 36%)
CMYK	cmyk(70.3%, 0%, 2.2%, 64.3%)
CIE-LAB	lab(34.87, -20.25, -4.76)
CIE-LCH	lch(34.87, 20.80, 193.22°)
OKLab	oklab(43.1% -0.0619 -0.0132)
OKLCH	oklch(43.1% 0.063 192.1)
XYZ	xyz(5.9954, 8.4358, 10.7616)
Luminance	0.0844 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B59 #5B1B1D

analogous

#1B5B39 #1B5B59 #1B3D5B

triadic

#1B5B59 #591B5B #5B591B

tetradic

#1B5B59 #391B5B #5B1B1D #3D5B1B

square

#1B5B59 #391B5B #5B1B1D #3D5B1B

split-complementary

#1B5B59 #5B1B3D #5B391B

monochromatic

#071817 #0D2C2B #1B5B59 #298A87 #37B9B5

Accessibility & contrast

On white

7.81

#1B5B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1B5B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B59

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B59	#FFFFFF	#000000	##FFFFFF
##1B5B59	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#555659

Deuteranopia (green-blind)

#4B4F5A

Tritanopia (blue-blind)

#005E5A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b5b59;
/* rgb */ color: rgb(27, 91, 89);
/* oklch */ color: oklch(43.1% 0.063 192.1);

Tailwind

colors: {
  custom: {
    50: '#628987',
    500: '#1b5b59',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b59;
$custom-light: #628987;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b59",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 89
  },
  "hsl": {
    "h": 178.125,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.43103,
    "c": 0.06328,
    "h": 192.1
  },
  "luminance": 0.08436
}

Semantic roles & 50–950 ramp

primary

#1B5B59

secondary

#914144

accent

#4A4FDE

background

#F6F8F8

surface

#EBF0EF

border

#C6CBCA

text

#060B0B

muted

#7A7C7C

Preview Lab

Preview with #1B5B59

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

Preview Lab → · Contrast checker → · Palette generator →