#1B4B50#1B4B50

#1B4B50 is a dark, muted teal. Relative luminance 0.058; OKLCH L 38.3% C 0.052 H 204.7°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B50
RGB	rgb(27, 75, 80)
HSL	hsl(186, 50%, 21%)
HSV	hsv(186, 66%, 31%)
CMYK	cmyk(66.3%, 6.2%, 0%, 68.6%)
CIE-LAB	lab(29.02, -14.29, -7.81)
CIE-LCH	lch(29.02, 16.28, 208.65°)
OKLab	oklab(38.26% -0.047 -0.0216)
OKLCH	oklch(38.26% 0.052 204.7)
XYZ	xyz(4.4154, 5.8439, 8.4831)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B50 #50201B

analogous

#1B503A #1B4B50 #1B3050

triadic

#1B4B50 #501B4B #4B501B

tetradic

#1B4B50 #3A1B50 #50201B #30501B

square

#1B4B50 #3A1B50 #50201B #30501B

split-complementary

#1B4B50 #501B30 #503A1B

monochromatic

#081517 #0C2022 #1B4B50 #2A767E #3AA1AC

Accessibility & contrast

On white

9.68

#1B4B50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1B4B50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B50

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B50	#FFFFFF	#000000	##FFFFFF
##1B4B50	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#454850

Deuteranopia (green-blind)

#3D4250

Tritanopia (blue-blind)

#004E4C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4b50;
/* rgb */ color: rgb(27, 75, 80);
/* oklch */ color: oklch(38.3% 0.052 204.7);

Tailwind

colors: {
  custom: {
    50: '#5f7d81',
    500: '#1b4b50',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b50;
$custom-light: #5f7d81;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b50",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 80
  },
  "hsl": {
    "h": 185.66,
    "s": 49.533,
    "l": 20.98
  },
  "oklch": {
    "l": 0.38259,
    "c": 0.05173,
    "h": 204.7
  },
  "luminance": 0.05844
}

Semantic roles & 50–950 ramp

primary

#1B4B50

secondary

#864741

accent

#5C4FD9

background

#F5F7F7

surface

#E9EEEE

border

#C5C9C9

text

#05090A

muted

#797B7C

Preview Lab

Preview with #1B4B50

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

Preview Lab → · Contrast checker → · Palette generator →