#1B504D#1B504D

#1B504D is a dark, muted teal. Relative luminance 0.065; OKLCH L 39.5% C 0.056 H 189.9°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B504D
RGB	rgb(27, 80, 77)
HSL	hsl(177, 50%, 21%)
HSV	hsv(177, 66%, 31%)
CMYK	cmyk(66.3%, 0%, 3.7%, 68.6%)
CIE-LAB	lab(30.65, -18.10, -3.43)
CIE-LCH	lch(30.65, 18.42, 190.74°)
OKLab	oklab(39.55% -0.0547 -0.0096)
OKLCH	oklch(39.55% 0.056 189.9)
XYZ	xyz(4.6596, 6.5057, 8.0299)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B504D #501B1E

analogous

#1B5032 #1B504D #1B3850

triadic

#1B504D #4D1B50 #504D1B

tetradic

#1B504D #321B50 #501B1E #38501B

square

#1B504D #321B50 #501B1E #38501B

split-complementary

#1B504D #501B38 #50321B

monochromatic

#081716 #0C2221 #1B504D #2A7E79 #3AACA5

Accessibility & contrast

On white

9.13

#1B504D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B504D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B504D

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B504D	#FFFFFF	#000000	##FFFFFF
##1B504D	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4C4D

Deuteranopia (green-blind)

#43464E

Tritanopia (blue-blind)

#00524F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b504d;
/* rgb */ color: rgb(27, 80, 77);
/* oklch */ color: oklch(39.5% 0.056 189.9);

Tailwind

colors: {
  custom: {
    50: '#5f817e',
    500: '#1b504d',
    950: '#000000',
  },
}

SCSS

$custom: #1b504d;
$custom-light: #5f817e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b504d",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 77
  },
  "hsl": {
    "h": 176.604,
    "s": 49.533,
    "l": 20.98
  },
  "oklch": {
    "l": 0.39547,
    "c": 0.05555,
    "h": 189.9
  },
  "luminance": 0.06506
}

Semantic roles & 50–950 ramp

primary

#1B504D

secondary

#864145

accent

#4F57D9

background

#F5F7F7

surface

#EAEEEE

border

#C6C9C9

text

#050A0A

muted

#797C7C

Preview Lab

Preview with #1B504D

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

Preview Lab → · Contrast checker → · Palette generator →