#1B575B#1B575B

#1B575B is a dark, moderate teal. Relative luminance 0.078; OKLCH L 42.1% C 0.060 H 201.4°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B575B
RGB	rgb(27, 87, 91)
HSL	hsl(184, 54%, 23%)
HSV	hsv(184, 70%, 36%)
CMYK	cmyk(70.3%, 4.4%, 0%, 64.3%)
CIE-LAB	lab(33.57, -17.41, -7.96)
CIE-LCH	lch(33.57, 19.15, 204.56°)
OKLab	oklab(42.07% -0.0562 -0.0221)
OKLCH	oklch(42.07% 0.06 201.4)
XYZ	xyz(5.7477, 7.8041, 11.0989)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B575B #5B1F1B

analogous

#1B5B3F #1B575B #1B375B

triadic

#1B575B #5B1B57 #575B1B

tetradic

#1B575B #3F1B5B #5B1F1B #375B1B

square

#1B575B #3F1B5B #5B1F1B #375B1B

split-complementary

#1B575B #5B1B37 #5B3F1B

monochromatic

#071718 #0D2A2C #1B575B #29848A #37B1B9

Accessibility & contrast

On white

8.20

#1B575B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1B575B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B575B

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B575B	#FFFFFF	#000000	##FFFFFF
##1B575B	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50535B

Deuteranopia (green-blind)

#474C5B

Tritanopia (blue-blind)

#005A58

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b575b;
/* rgb */ color: rgb(27, 87, 91);
/* oklch */ color: oklch(42.1% 0.060 201.4);

Tailwind

colors: {
  custom: {
    50: '#618689',
    500: '#1b575b',
    950: '#000000',
  },
}

SCSS

$custom: #1b575b;
$custom-light: #618689;
$custom-dark: #000000;

JSON

{
  "hex": "#1b575b",
  "rgb": {
    "r": 27,
    "g": 87,
    "b": 91
  },
  "hsl": {
    "h": 183.75,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.42072,
    "c": 0.06037,
    "h": 201.4
  },
  "luminance": 0.07805
}

Semantic roles & 50–950 ramp

primary

#1B575B

secondary

#914641

accent

#534ADE

background

#F6F8F8

surface

#EBEFF0

border

#C6CACB

text

#050B0B

muted

#7A7C7C

Preview Lab

Preview with #1B575B

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

Preview Lab → · Contrast checker → · Palette generator →