#1B5A5B#1B5A5B

#1B5A5B is a dark, moderate teal. Relative luminance 0.083; OKLCH L 42.9% C 0.062 H 196.6°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#1B5A5B
RGB	rgb(27, 90, 91)
HSL	hsl(181, 54%, 23%)
HSV	hsv(181, 70%, 36%)
CMYK	cmyk(70.3%, 1.1%, 0%, 64.3%)
CIE-LAB	lab(34.60, -19.07, -6.42)
CIE-LCH	lch(34.60, 20.12, 198.60°)
OKLab	oklab(42.9% -0.0597 -0.0178)
OKLCH	oklch(42.9% 0.062 196.6)
XYZ	xyz(5.9956, 8.3000, 11.1816)
Luminance	0.0830 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5A5B #5B1C1B

analogous

#1B5B3C #1B5A5B #1B3A5B

triadic

#1B5A5B #5B1B5A #5A5B1B

tetradic

#1B5A5B #3C1B5B #5B1C1B #3A5B1B

square

#1B5A5B #3C1B5B #5B1C1B #3A5B1B

split-complementary

#1B5A5B #5B1B3A #5B3C1B

monochromatic

#071718 #0D2B2C #1B5A5B #29898A #37B7B9

Accessibility & contrast

On white

7.89

#1B5A5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1B5A5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A5B

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5A5B	#FFFFFF	#000000	##FFFFFF
##1B5A5B	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#54565B

Deuteranopia (green-blind)

#4A4E5B

Tritanopia (blue-blind)

#005D5A

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b5a5b;
/* rgb */ color: rgb(27, 90, 91);
/* oklch */ color: oklch(42.9% 0.062 196.6);

Tailwind

colors: {
  custom: {
    50: '#628989',
    500: '#1b5a5b',
    950: '#000000',
  },
}

SCSS

$custom: #1b5a5b;
$custom-light: #628989;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5a5b",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 91
  },
  "hsl": {
    "h": 180.938,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.42904,
    "c": 0.06231,
    "h": 196.6
  },
  "luminance": 0.08301
}

Semantic roles & 50–950 ramp

primary

#1B5A5B

secondary

#914241

accent

#4D4ADE

background

#F6F8F8

surface

#EBF0F0

border

#C6CBCB

text

#060B0B

muted

#7A7C7C

Preview Lab

Preview with #1B5A5B

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

Preview Lab → · Contrast checker → · Palette generator →