#1B5B82#1B5B82

#1B5B82 is a mid, moderate cyan. Relative luminance 0.093; OKLCH L 45.1% C 0.090 H 240.3°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX#1B5B82
RGBrgb(27, 91, 130)
HSLhsl(203, 66%, 31%)
HSVhsv(203, 79%, 51%)
CMYKcmyk(79.2%, 30%, 0%, 49%)
CIE-LABlab(36.60, -5.62, -27.51)
CIE-LCHlch(36.60, 28.08, 258.45°)
OKLaboklab(45.06% -0.0444 -0.0778)
OKLCHoklch(45.06% 0.09 240.3)
XYZxyz(8.2208, 9.3259, 22.4816)
Luminance0.0933 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5B82 #82421B
analogous
#1B8275 #1B5B82 #1B2882
triadic
#1B5B82 #821B5B #5B821B
tetradic
#1B5B82 #751B82 #82421B #28821B
square
#1B5B82 #751B82 #82421B #28821B
split-complementary
#1B5B82 #821B28 #82751B
monochromatic
#06141D #10384F #1B5B82 #267EB5 #409ED7

Accessibility & contrast

On white

7.33
#1B5B82 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.87
#1B5B82 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B82
7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5B82#FFFFFF#000000##FFFFFF
##1B5B821.007.332.877.33
#FFFFFF7.331.0021.001.00
#0000002.8721.001.0021.00
##FFFFFF7.331.0021.001.00

Color blindness preview

Protanopia (red-blind)
#495B84
Deuteranopia (green-blind)
#3B5281
Tritanopia (blue-blind)
#006569
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #1b5b82;
/* rgb */ color: rgb(27, 91, 130);
/* oklch */ color: oklch(45.1% 0.090 240.3);
Tailwind
colors: {
  custom: {
    50: '#6889a6',
    500: '#1b5b82',
    950: '#000000',
  },
}
SCSS
$custom: #1b5b82;
$custom-light: #6889a6;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5b82",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 130
  },
  "hsl": {
    "h": 202.718,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.45062,
    "c": 0.08961,
    "h": 240.3
  },
  "luminance": 0.09327
}

Semantic roles & 50–950 ramp

primary
#1B5B82
secondary
#B66F43
accent
#7F3FE9
background
#F6F8FA
surface
#EBF0F4
border
#C6CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5B82

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5B82 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva