#1B4747#1B4747

#1B4747 is a dark, muted teal. Relative luminance 0.052; OKLCH L 36.8% C 0.048 H 195.3°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B4747
RGB	rgb(27, 71, 71)
HSL	hsl(180, 45%, 19%)
HSV	hsv(180, 62%, 28%)
CMYK	cmyk(62%, 0%, 0%, 72.2%)
CIE-LAB	lab(27.28, -14.96, -4.57)
CIE-LCH	lch(27.28, 15.64, 197.00°)
OKLab	oklab(36.75% -0.0464 -0.0127)
OKLCH	oklch(36.75% 0.048 195.3)
XYZ	xyz(3.8421, 5.1940, 6.7601)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4747 #471B1B

analogous

#1B4731 #1B4747 #1B3147

triadic

#1B4747 #471B47 #47471B

tetradic

#1B4747 #311B47 #471B1B #31471B

square

#1B4747 #311B47 #471B1B #31471B

split-complementary

#1B4747 #471B31 #47311B

monochromatic

#081616 #0A1B1B #1B4747 #2C7373 #3DA0A0

Accessibility & contrast

On white

10.30

#1B4747 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1B4747 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4747

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4747	#FFFFFF	#000000	##FFFFFF
##1B4747	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#424447

Deuteranopia (green-blind)

#3B3E47

Tritanopia (blue-blind)

#004947

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b4747;
/* rgb */ color: rgb(27, 71, 71);
/* oklch */ color: oklch(36.8% 0.048 195.3);

Tailwind

colors: {
  custom: {
    50: '#5d7a7a',
    500: '#1b4747',
    950: '#000000',
  },
}

SCSS

$custom: #1b4747;
$custom-light: #5d7a7a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4747",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 71
  },
  "hsl": {
    "h": 180,
    "s": 44.898,
    "l": 19.216
  },
  "oklch": {
    "l": 0.3675,
    "c": 0.04811,
    "h": 195.3
  },
  "luminance": 0.05194
}

Semantic roles & 50–950 ramp

primary

#1B4747

secondary

#7D4141

accent

#5353D5

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040909

muted

#797B7B

Preview Lab

Preview with #1B4747

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

Preview Lab → · Contrast checker → · Palette generator →