#1B6583#1B6583

#1B6583 is a mid, moderate cyan. Relative luminance 0.112; OKLCH L 47.7% C 0.084 H 230.0°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX#1B6583
RGBrgb(27, 101, 131)
HSLhsl(197, 66%, 31%)
HSVhsv(197, 79%, 51%)
CMYKcmyk(79.4%, 22.9%, 0%, 48.6%)
CIE-LABlab(39.88, -11.28, -23.01)
CIE-LCHlch(39.88, 25.63, 243.89°)
OKLaboklab(47.68% -0.0542 -0.0647)
OKLCHoklch(47.68% 0.084 230)
XYZxyz(9.2007, 11.1780, 23.1410)
Luminance0.1118 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B6583 #83391B
analogous
#1B836D #1B6583 #1B3183
triadic
#1B6583 #831B65 #65831B
tetradic
#1B6583 #6D1B83 #83391B #31831B
square
#1B6583 #6D1B83 #83391B #31831B
split-complementary
#1B6583 #831B31 #836D1B
monochromatic
#06171E #113E50 #1B6583 #258CB6 #41ACD8

Accessibility & contrast

On white

6.49
#1B6583 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.24
#1B6583 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B6583
6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B6583#FFFFFF#000000##FFFFFF
##1B65831.006.493.246.49
#FFFFFF6.491.0021.001.00
#0000003.2421.001.0021.00
##FFFFFF6.491.0021.001.00

Color blindness preview

Protanopia (red-blind)
#566384
Deuteranopia (green-blind)
#485A83
Tritanopia (blue-blind)
#006D6F
Achromatopsia (no color)
#5E5E5E

Design tokens & code

CSS
--color: #1b6583;
/* rgb */ color: rgb(27, 101, 131);
/* oklch */ color: oklch(47.7% 0.084 230.0);
Tailwind
colors: {
  custom: {
    50: '#6991a7',
    500: '#1b6583',
    950: '#000000',
  },
}
SCSS
$custom: #1b6583;
$custom-light: #6991a7;
$custom-dark: #000000;
JSON
{
  "hex": "#1b6583",
  "rgb": {
    "r": 27,
    "g": 101,
    "b": 131
  },
  "hsl": {
    "h": 197.308,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.47684,
    "c": 0.08442,
    "h": 230
  },
  "luminance": 0.11179
}

Semantic roles & 50–950 ramp

primary
#1B6583
secondary
#B66543
accent
#703FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#070C0F
muted
#7A7D7F

Preview Lab

Preview with #1B6583

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

Preview Lab → · Contrast checker → · Palette generator →

#1B6583 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva