#1B859B#1B859B

#1B859B is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.0% C 0.095 H 216.0°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX#1B859B
RGBrgb(27, 133, 155)
HSLhsl(190, 70%, 36%)
HSVhsv(190, 83%, 61%)
CMYKcmyk(82.6%, 14.2%, 0%, 39.2%)
CIE-LABlab(51.12, -20.60, -19.92)
CIE-LCHlch(51.12, 28.65, 224.03°)
OKLaboklab(57.04% -0.0767 -0.0557)
OKLCHoklch(57.04% 0.095 216)
XYZxyz(14.7534, 19.3728, 33.9657)
Luminance0.1938 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B859B #9B311B
analogous
#1B9B71 #1B859B #1B459B
triadic
#1B859B #9B1B85 #859B1B
tetradic
#1B859B #711B9B #9B311B #459B1B
square
#1B859B #711B9B #9B311B #459B1B
split-complementary
#1B859B #9B1B45 #9B711B
monochromatic
#092C33 #125867 #1B859B #24B2CF #50C8E0

Accessibility & contrast

On white

4.31
#1B859B on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.88
#1B859B on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B859B
4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B859B#FFFFFF#000000##000000
##1B859B1.004.314.884.88
#FFFFFF4.311.0021.0021.00
#0000004.8821.001.001.00
##0000004.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#76819C
Deuteranopia (green-blind)
#65759B
Tritanopia (blue-blind)
#008D8C
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #1b859b;
/* rgb */ color: rgb(27, 133, 155);
/* oklch */ color: oklch(57.0% 0.095 216.0);
Tailwind
colors: {
  custom: {
    50: '#70a8b8',
    500: '#1b859b',
    950: '#000000',
  },
}
SCSS
$custom: #1b859b;
$custom-light: #70a8b8;
$custom-dark: #000000;
JSON
{
  "hex": "#1b859b",
  "rgb": {
    "r": 27,
    "g": 133,
    "b": 155
  },
  "hsl": {
    "h": 190.313,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.57039,
    "c": 0.09478,
    "h": 216
  },
  "luminance": 0.19375
}

Semantic roles & 50–950 ramp

primary
#1B859B
secondary
#C3634F
accent
#593BED
background
#F7FAFB
surface
#EDF4F6
border
#C8CED0
text
#090F11
muted
#7B7F80

Preview Lab

Preview with #1B859B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B859B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva