#1B5377#1B5377

#1B5377 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.4% C 0.083 H 241.2°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX#1B5377
RGBrgb(27, 83, 119)
HSLhsl(203, 63%, 29%)
HSVhsv(203, 77%, 47%)
CMYKcmyk(77.3%, 30.3%, 0%, 53.3%)
CIE-LABlab(33.46, -4.87, -25.67)
CIE-LCHlch(33.46, 26.12, 259.26°)
OKLaboklab(42.39% -0.0399 -0.0726)
OKLCHoklch(42.39% 0.083 241.2)
XYZxyz(6.8737, 7.7506, 18.5829)
Luminance0.0775 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5377 #773F1B
analogous
#1B776D #1B5377 #1B2577
triadic
#1B5377 #771B53 #53771B
tetradic
#1B5377 #6D1B77 #773F1B #25771B
square
#1B5377 #6D1B77 #773F1B #25771B
split-complementary
#1B5377 #771B25 #776D1B
monochromatic
#061119 #103045 #1B5377 #2676A9 #3A97D2

Accessibility & contrast

On white

8.23
#1B5377 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.55
#1B5377 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5377
8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5377#FFFFFF#000000##FFFFFF
##1B53771.008.232.558.23
#FFFFFF8.231.0021.001.00
#0000002.5521.001.0021.00
##FFFFFF8.231.0021.001.00

Color blindness preview

Protanopia (red-blind)
#425379
Deuteranopia (green-blind)
#364B76
Tritanopia (blue-blind)
#005C60
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #1b5377;
/* rgb */ color: rgb(27, 83, 119);
/* oklch */ color: oklch(42.4% 0.083 241.2);
Tailwind
colors: {
  custom: {
    50: '#65839e',
    500: '#1b5377',
    950: '#000000',
  },
}
SCSS
$custom: #1b5377;
$custom-light: #65839e;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5377",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 119
  },
  "hsl": {
    "h": 203.478,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.42385,
    "c": 0.08284,
    "h": 241.2
  },
  "luminance": 0.07751
}

Semantic roles & 50–950 ramp

primary
#1B5377
secondary
#AB6B42
accent
#8242E6
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#060A0E
muted
#7A7C7E

Preview Lab

Preview with #1B5377

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5377 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva