#1B5957#1B5957

#1B5957 is a dark, moderate teal. Relative luminance 0.081; OKLCH L 42.5% C 0.062 H 192.0°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B5957
RGB	rgb(27, 89, 87)
HSL	hsl(178, 53%, 23%)
HSV	hsv(178, 70%, 35%)
CMYK	cmyk(69.7%, 0%, 2.2%, 65.1%)
CIE-LAB	lab(34.12, -19.82, -4.63)
CIE-LCH	lch(34.12, 20.35, 193.14°)
OKLab	oklab(42.47% -0.0605 -0.0129)
OKLCH	oklch(42.47% 0.062 192)
XYZ	xyz(5.7439, 8.0653, 10.2690)
Luminance	0.0807 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5957 #591B1D

analogous

#1B5938 #1B5957 #1B3C59

triadic

#1B5957 #571B59 #59571B

tetradic

#1B5957 #381B59 #591B1D #3C591B

square

#1B5957 #381B59 #591B1D #3C591B

split-complementary

#1B5957 #591B3C #59381B

monochromatic

#071717 #0D2A29 #1B5957 #298885 #37B7B3

Accessibility & contrast

On white

8.04

#1B5957 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1B5957 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5957

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5957	#FFFFFF	#000000	##FFFFFF
##1B5957	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#535457

Deuteranopia (green-blind)

#4A4D58

Tritanopia (blue-blind)

#005C58

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b5957;
/* rgb */ color: rgb(27, 89, 87);
/* oklch */ color: oklch(42.5% 0.062 192.0);

Tailwind

colors: {
  custom: {
    50: '#618886',
    500: '#1b5957',
    950: '#000000',
  },
}

SCSS

$custom: #1b5957;
$custom-light: #618886;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5957",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 87
  },
  "hsl": {
    "h": 178.065,
    "s": 53.448,
    "l": 22.745
  },
  "oklch": {
    "l": 0.42468,
    "c": 0.06189,
    "h": 192
  },
  "luminance": 0.08066
}

Semantic roles & 50–950 ramp

primary

#1B5957

secondary

#8F4144

accent

#4B50DD

background

#F6F8F8

surface

#EBF0EF

border

#C6CBCA

text

#050B0B

muted

#7A7C7C

Preview Lab

Preview with #1B5957

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

Preview Lab → · Contrast checker → · Palette generator →