#1B5A85#1B5A85

#1B5A85 is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.094 H 243.2°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX#1B5A85
RGBrgb(27, 90, 133)
HSLhsl(204, 66%, 31%)
HSVhsv(204, 80%, 52%)
CMYKcmyk(79.7%, 32.3%, 0%, 47.8%)
CIE-LABlab(36.44, -3.84, -29.61)
CIE-LCHlch(36.44, 29.86, 262.61°)
OKLaboklab(44.98% -0.0424 -0.084)
OKLCHoklch(44.98% 0.094 243.2)
XYZxyz(8.3401, 9.2378, 23.5293)
Luminance0.0924 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5A85 #85461B
analogous
#1B857B #1B5A85 #1B2585
triadic
#1B5A85 #851B5A #5A851B
tetradic
#1B5A85 #7B1B85 #85461B #25851B
square
#1B5A85 #7B1B85 #85461B #25851B
split-complementary
#1B5A85 #851B25 #857B1B
monochromatic
#06151F #113852 #1B5A85 #257CB8 #429BD9

Accessibility & contrast

On white

7.37
#1B5A85 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.85
#1B5A85 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A85
7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5A85#FFFFFF#000000##FFFFFF
##1B5A851.007.372.857.37
#FFFFFF7.371.0021.001.00
#0000002.8521.001.0021.00
##FFFFFF7.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#465B87
Deuteranopia (green-blind)
#375184
Tritanopia (blue-blind)
#006569
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #1b5a85;
/* rgb */ color: rgb(27, 90, 133);
/* oklch */ color: oklch(45.0% 0.094 243.2);
Tailwind
colors: {
  custom: {
    50: '#6988a8',
    500: '#1b5a85',
    950: '#000000',
  },
}
SCSS
$custom: #1b5a85;
$custom-light: #6988a8;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5a85",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 133
  },
  "hsl": {
    "h": 204.34,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.44981,
    "c": 0.09405,
    "h": 243.2
  },
  "luminance": 0.09239
}

Semantic roles & 50–950 ramp

primary
#1B5A85
secondary
#B87344
accent
#843FE9
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5A85

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5A85 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva