#1B8AAD#1B8AAD

#1B8AAD is a mid, moderate cyan. Relative luminance 0.214; OKLCH L 59.1% C 0.106 H 225.4°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX#1B8AAD
RGBrgb(27, 138, 173)
HSLhsl(194, 73%, 39%)
HSVhsv(194, 84%, 68%)
CMYKcmyk(84.4%, 20.2%, 0%, 32.2%)
CIE-LABlab(53.41, -17.03, -26.79)
CIE-LCHlch(53.41, 31.75, 237.55°)
OKLaboklab(59.12% -0.0743 -0.0753)
OKLCHoklch(59.12% 0.106 225.4)
XYZxyz(17.0801, 21.4249, 42.7623)
Luminance0.2143 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B8AAD #AD3E1B
analogous
#1BAD87 #1B8AAD #1B41AD
triadic
#1B8AAD #AD1B8A #8AAD1B
tetradic
#1B8AAD #871BAD #AD3E1B #41AD1B
square
#1B8AAD #871BAD #AD3E1B #41AD1B
split-complementary
#1B8AAD #AD1B41 #AD871B
monochromatic
#0A3643 #136078 #1B8AAD #28B2DD #5DC5E6

Accessibility & contrast

On white

3.97
#1B8AAD on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.29
#1B8AAD on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B8AAD
5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B8AAD#FFFFFF#000000##000000
##1B8AAD1.003.975.295.29
#FFFFFF3.971.0021.0021.00
#0000005.2921.001.001.00
##0000005.2921.001.001.00

Color blindness preview

Protanopia (red-blind)
#7787AF
Deuteranopia (green-blind)
#647AAD
Tritanopia (blue-blind)
#009495
Achromatopsia (no color)
#808080

Design tokens & code

CSS
--color: #1b8aad;
/* rgb */ color: rgb(27, 138, 173);
/* oklch */ color: oklch(59.1% 0.106 225.4);
Tailwind
colors: {
  custom: {
    50: '#73acc5',
    500: '#1b8aad',
    950: '#000000',
  },
}
SCSS
$custom: #1b8aad;
$custom-light: #73acc5;
$custom-dark: #000000;
JSON
{
  "hex": "#1b8aad",
  "rgb": {
    "r": 27,
    "g": 138,
    "b": 173
  },
  "hsl": {
    "h": 194.384,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.59121,
    "c": 0.1058,
    "h": 225.4
  },
  "luminance": 0.21427
}

Semantic roles & 50–950 ramp

primary
#1B8AAD
secondary
#CA755A
accent
#6438F0
background
#F7FAFC
surface
#EEF4F8
border
#C9CED1
text
#0A1013
muted
#7C7F82

Preview Lab

Preview with #1B8AAD

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

Preview Lab → · Contrast checker → · Palette generator →

#1B8AAD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva