#1B504F#1B504F

#1B504F is a dark, muted teal. Relative luminance 0.065; OKLCH L 39.6% C 0.055 H 193.4°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B504F
RGB	rgb(27, 80, 79)
HSL	hsl(179, 50%, 21%)
HSV	hsv(179, 66%, 31%)
CMYK	cmyk(66.3%, 0%, 1.2%, 68.6%)
CIE-LAB	lab(30.72, -17.46, -4.61)
CIE-LCH	lch(30.72, 18.06, 194.79°)
OKLab	oklab(39.63% -0.0537 -0.0128)
OKLCH	oklch(39.63% 0.055 193.4)
XYZ	xyz(4.7313, 6.5343, 8.4075)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B504F #501B1C

analogous

#1B5034 #1B504F #1B3650

triadic

#1B504F #4F1B50 #504F1B

tetradic

#1B504F #341B50 #501B1C #36501B

square

#1B504F #341B50 #501B1C #36501B

split-complementary

#1B504F #501B36 #50341B

monochromatic

#081717 #0C2222 #1B504F #2A7E7C #3AACA9

Accessibility & contrast

On white

9.10

#1B504F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B504F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B504F

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B504F	#FFFFFF	#000000	##FFFFFF
##1B504F	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4C4F

Deuteranopia (green-blind)

#42464F

Tritanopia (blue-blind)

#005250

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b504f;
/* rgb */ color: rgb(27, 80, 79);
/* oklch */ color: oklch(39.6% 0.055 193.4);

Tailwind

colors: {
  custom: {
    50: '#5f8180',
    500: '#1b504f',
    950: '#000000',
  },
}

SCSS

$custom: #1b504f;
$custom-light: #5f8180;
$custom-dark: #000000;

JSON

{
  "hex": "#1b504f",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 79
  },
  "hsl": {
    "h": 178.868,
    "s": 49.533,
    "l": 20.98
  },
  "oklch": {
    "l": 0.39626,
    "c": 0.0552,
    "h": 193.4
  },
  "luminance": 0.06535
}

Semantic roles & 50–950 ramp

primary

#1B504F

secondary

#864142

accent

#4F51D9

background

#F5F7F7

surface

#EAEEEE

border

#C6C9C9

text

#050A0A

muted

#797C7C

Preview Lab

Preview with #1B504F

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

Preview Lab → · Contrast checker → · Palette generator →