#1B901A#1B901A

#1B901A is a mid, vivid green. Relative luminance 0.203; OKLCH L 57.0% C 0.181 H 142.7°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX#1B901A
RGBrgb(27, 144, 26)
HSLhsl(119, 69%, 33%)
HSVhsv(119, 82%, 56%)
CMYKcmyk(81.3%, 0%, 81.9%, 43.5%)
CIE-LABlab(52.12, -52.87, 49.20)
CIE-LCHlch(52.12, 72.22, 137.06°)
OKLaboklab(57% -0.1435 0.1095)
OKLCHoklch(57% 0.181 142.7)
XYZxyz(10.6110, 20.2528, 4.3270)
Luminance0.2025 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B901A #8F1A90
analogous
#56901A #1B901A #1A9054
triadic
#1B901A #1A1B90 #901A1B
tetradic
#1B901A #1A5690 #8F1A90 #90541A
square
#1B901A #1A5690 #8F1A90 #90541A
split-complementary
#1B901A #541A90 #901A56
monochromatic
#082807 #115C11 #1B901A #25C423 #48DE47

Accessibility & contrast

On white

4.16
#1B901A on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.05
#1B901A on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B901A
5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B901A#FFFFFF#000000##000000
##1B901A1.004.165.055.05
#FFFFFF4.161.0021.0021.00
#0000005.0521.001.001.00
##0000005.0521.001.001.00

Color blindness preview

Protanopia (red-blind)
#938200
Deuteranopia (green-blind)
#877929
Tritanopia (blue-blind)
#008C7A
Achromatopsia (no color)
#7C7C7C

Design tokens & code

CSS
--color: #1b901a;
/* rgb */ color: rgb(27, 144, 26);
/* oklch */ color: oklch(57.0% 0.181 142.7);
Tailwind
colors: {
  custom: {
    50: '#6fb261',
    500: '#1b901a',
    950: '#000000',
  },
}
SCSS
$custom: #1b901a;
$custom-light: #6fb261;
$custom-dark: #000000;
JSON
{
  "hex": "#1b901a",
  "rgb": {
    "r": 27,
    "g": 144,
    "b": 26
  },
  "hsl": {
    "h": 119.492,
    "s": 69.412,
    "l": 33.333
  },
  "oklch": {
    "l": 0.57001,
    "c": 0.18053,
    "h": 142.7
  },
  "luminance": 0.20254
}

Semantic roles & 50–950 ramp

primary
#1B901A
secondary
#BE47BF
accent
#3CECEB
background
#F7FBF6
surface
#EDF6EB
border
#C8D0C6
text
#091105
muted
#7B807A

Preview Lab

Preview with #1B901A

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

Preview Lab → · Contrast checker → · Palette generator →

#1B901A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva