#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
RGBrgb(27, 75, 80)
HSLhsl(186, 50%, 21%)
HSVhsv(186, 66%, 31%)
CMYKcmyk(66.3%, 6.2%, 0%, 68.6%)
CIE-LABlab(29.02, -14.29, -7.81)
CIE-LCHlch(29.02, 16.28, 208.65°)
OKLaboklab(38.26% -0.047 -0.0216)
OKLCHoklch(38.26% 0.052 204.7)
XYZxyz(4.4154, 5.8439, 8.4831)
Luminance0.0584 (WCAG relative)
Temperaturecool
Familyteal

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
##1B4B501.009.682.179.68
#FFFFFF9.681.0021.001.00
#0000002.1721.001.0021.00
##FFFFFF9.681.0021.001.00

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 →

#1B4B50 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva