#1B5E73#1B5E73

#1B5E73 is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.1% C 0.073 H 223.2°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX#1B5E73
RGBrgb(27, 94, 115)
HSLhsl(194, 62%, 28%)
HSVhsv(194, 77%, 45%)
CMYKcmyk(76.5%, 18.3%, 0%, 54.9%)
CIE-LABlab(36.88, -13.03, -17.87)
CIE-LCHlch(36.88, 22.11, 233.89°)
OKLaboklab(45.05% -0.0533 -0.05)
OKLCHoklch(45.05% 0.073 223.2)
XYZxyz(7.5479, 9.4753, 17.6475)
Luminance0.0948 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5E73 #73301B
analogous
#1B735C #1B5E73 #1B3273
triadic
#1B5E73 #731B5E #5E731B
tetradic
#1B5E73 #5C1B73 #73301B #32731B
square
#1B5E73 #5C1B73 #73301B #32731B
split-complementary
#1B5E73 #731B32 #735C1B
monochromatic
#061419 #0F3541 #1B5E73 #2787A5 #38ACD0

Accessibility & contrast

On white

7.25
#1B5E73 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.90
#1B5E73 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5E73
7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5E73#FFFFFF#000000##FFFFFF
##1B5E731.007.252.907.25
#FFFFFF7.251.0021.001.00
#0000002.9021.001.0021.00
##FFFFFF7.251.0021.001.00

Color blindness preview

Protanopia (red-blind)
#525C74
Deuteranopia (green-blind)
#465373
Tritanopia (blue-blind)
#006465
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #1b5e73;
/* rgb */ color: rgb(27, 94, 115);
/* oklch */ color: oklch(45.1% 0.073 223.2);
Tailwind
colors: {
  custom: {
    50: '#658b9b',
    500: '#1b5e73',
    950: '#000000',
  },
}
SCSS
$custom: #1b5e73;
$custom-light: #658b9b;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5e73",
  "rgb": {
    "r": 27,
    "g": 94,
    "b": 115
  },
  "hsl": {
    "h": 194.318,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.45054,
    "c": 0.07305,
    "h": 223.2
  },
  "luminance": 0.09476
}

Semantic roles & 50–950 ramp

primary
#1B5E73
secondary
#A85A42
accent
#6943E5
background
#F6F8F9
surface
#EBF0F2
border
#C6CBCC
text
#060C0E
muted
#7A7D7E

Preview Lab

Preview with #1B5E73

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5E73 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva