#1B5680#1B5680

#1B5680 is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.7% C 0.091 H 244.0°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX#1B5680
RGBrgb(27, 86, 128)
HSLhsl(205, 65%, 30%)
HSVhsv(205, 79%, 50%)
CMYKcmyk(78.9%, 32.8%, 0%, 49.8%)
CIE-LABlab(34.90, -3.27, -28.97)
CIE-LCHlch(34.90, 29.16, 263.57°)
OKLaboklab(43.68% -0.04 -0.0822)
OKLCHoklch(43.68% 0.091 244)
XYZxyz(7.6746, 8.4462, 21.6437)
Luminance0.0845 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5680 #80451B
analogous
#1B8077 #1B5680 #1B2480
triadic
#1B5680 #801B56 #56801B
tetradic
#1B5680 #771B80 #80451B #24801B
square
#1B5680 #771B80 #80451B #24801B
split-complementary
#1B5680 #801B24 #80771B
monochromatic
#06121B #10344D #1B5680 #2678B3 #3F97D6

Accessibility & contrast

On white

7.81
#1B5680 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.69
#1B5680 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5680
7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5680#FFFFFF#000000##FFFFFF
##1B56801.007.812.697.81
#FFFFFF7.811.0021.001.00
#0000002.6921.001.0021.00
##FFFFFF7.811.0021.001.00

Color blindness preview

Protanopia (red-blind)
#435782
Deuteranopia (green-blind)
#344E7F
Tritanopia (blue-blind)
#006065
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #1b5680;
/* rgb */ color: rgb(27, 86, 128);
/* oklch */ color: oklch(43.7% 0.091 244.0);
Tailwind
colors: {
  custom: {
    50: '#6785a5',
    500: '#1b5680',
    950: '#000000',
  },
}
SCSS
$custom: #1b5680;
$custom-light: #6785a5;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5680",
  "rgb": {
    "r": 27,
    "g": 86,
    "b": 128
  },
  "hsl": {
    "h": 204.95,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43676,
    "c": 0.09138,
    "h": 244
  },
  "luminance": 0.08447
}

Semantic roles & 50–950 ramp

primary
#1B5680
secondary
#B47243
accent
#8640E8
background
#F6F8FA
surface
#EBEFF4
border
#C6CACE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5680

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5680 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva