#1B5B84#1B5B84

#1B5B84 is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.2% C 0.092 H 241.6°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX#1B5B84
RGBrgb(27, 91, 132)
HSLhsl(203, 66%, 31%)
HSVhsv(203, 80%, 52%)
CMYKcmyk(79.5%, 31.1%, 0%, 48.2%)
CIE-LABlab(36.71, -4.85, -28.58)
CIE-LCHlch(36.71, 28.98, 260.36°)
OKLaboklab(45.18% -0.0437 -0.0809)
OKLCHoklch(45.18% 0.092 241.6)
XYZxyz(8.3563, 9.3801, 23.1955)
Luminance0.0938 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5B84 #84441B
analogous
#1B8478 #1B5B84 #1B2684
triadic
#1B5B84 #841B5B #5B841B
tetradic
#1B5B84 #781B84 #84441B #26841B
square
#1B5B84 #781B84 #84441B #26841B
split-complementary
#1B5B84 #841B26 #84781B
monochromatic
#06151E #113851 #1B5B84 #257EB7 #419DD8

Accessibility & contrast

On white

7.30
#1B5B84 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.88
#1B5B84 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B84
7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5B84#FFFFFF#000000##FFFFFF
##1B5B841.007.302.887.30
#FFFFFF7.301.0021.001.00
#0000002.8821.001.0021.00
##FFFFFF7.301.0021.001.00

Color blindness preview

Protanopia (red-blind)
#485C86
Deuteranopia (green-blind)
#395283
Tritanopia (blue-blind)
#006569
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #1b5b84;
/* rgb */ color: rgb(27, 91, 132);
/* oklch */ color: oklch(45.2% 0.092 241.6);
Tailwind
colors: {
  custom: {
    50: '#6889a8',
    500: '#1b5b84',
    950: '#000000',
  },
}
SCSS
$custom: #1b5b84;
$custom-light: #6889a8;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5b84",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 132
  },
  "hsl": {
    "h": 203.429,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.45176,
    "c": 0.09198,
    "h": 241.6
  },
  "luminance": 0.09381
}

Semantic roles & 50–950 ramp

primary
#1B5B84
secondary
#B77143
accent
#813FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5B84

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5B84 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva