#1B504A#1B504A

#1B504A is a dark, muted teal. Relative luminance 0.065; OKLCH L 39.4% C 0.056 H 184.9°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B504A
RGB	rgb(27, 80, 74)
HSL	hsl(173, 50%, 21%)
HSV	hsv(173, 66%, 31%)
CMYK	cmyk(66.3%, 0%, 7.5%, 68.6%)
CIE-LAB	lab(30.55, -19.04, -1.66)
CIE-LCH	lch(30.55, 19.11, 184.99°)
OKLab	oklab(39.43% -0.0563 -0.0048)
OKLCH	oklch(39.43% 0.056 184.9)
XYZ	xyz(4.5561, 6.4643, 7.4849)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B504A #501B21

analogous

#1B502F #1B504A #1B3B50

triadic

#1B504A #4A1B50 #504A1B

tetradic

#1B504A #2F1B50 #501B21 #3B501B

square

#1B504A #2F1B50 #501B21 #3B501B

split-complementary

#1B504A #501B3B #502F1B

monochromatic

#081715 #0C2220 #1B504A #2A7E74 #3AAC9F

Accessibility & contrast

On white

9.16

#1B504A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B504A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B504A

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B504A	#FFFFFF	#000000	##FFFFFF
##1B504A	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C4B4A

Deuteranopia (green-blind)

#44454B

Tritanopia (blue-blind)

#00524E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b504a;
/* rgb */ color: rgb(27, 80, 74);
/* oklch */ color: oklch(39.4% 0.056 184.9);

Tailwind

colors: {
  custom: {
    50: '#5f817c',
    500: '#1b504a',
    950: '#000000',
  },
}

SCSS

$custom: #1b504a;
$custom-light: #5f817c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b504a",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 74
  },
  "hsl": {
    "h": 173.208,
    "s": 49.533,
    "l": 20.98
  },
  "oklch": {
    "l": 0.39434,
    "c": 0.05648,
    "h": 184.9
  },
  "luminance": 0.06465
}

Semantic roles & 50–950 ramp

primary

#1B504A

secondary

#864149

accent

#4F5ED9

background

#F5F7F7

surface

#EAEEEE

border

#C6C9C9

text

#050A09

muted

#797C7B

Preview Lab

Preview with #1B504A

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

Preview Lab → · Contrast checker → · Palette generator →