#1B901F#1B901F
#1B901F is a mid, vivid green. Relative luminance 0.203; OKLCH L 57.0% C 0.178 H 143.1°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).
Color values
| HEX | #1B901F |
|---|---|
| RGB | rgb(27, 144, 31) |
| HSL | hsl(122, 68%, 34%) |
| HSV | hsv(122, 81%, 56%) |
| CMYK | cmyk(81.3%, 0%, 78.5%, 43.5%) |
| CIE-LAB | lab(52.15, -52.53, 47.60) |
| CIE-LCH | lch(52.15, 70.89, 137.82°) |
| OKLab | oklab(57.03% -0.1424 0.1068) |
| OKLCH | oklch(57.03% 0.178 143.1) |
| XYZ | xyz(10.6719, 20.2772, 4.6475) |
| Luminance | 0.2028 (WCAG relative) |
| Temperature | neutral |
| Family | green |
Closest named colors
Emerald Green
#028F1E
ΔE00 0.91
Forestgreen (CSS)
#228B22
ΔE00 1.82
Irish Green
#019529
ΔE00 2.09
True Green
#089404
ΔE00 2.32
Kelley Green
#009337
ΔE00 3.46
Grass Green
#3F9B0B
ΔE00 5.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B901F #901B8C
analogous
#51901B #1B901F #1B9059
triadic
#1B901F #1F1B90 #901F1B
tetradic
#1B901F #1B5190 #901B8C #90591B
square
#1B901F #1B5190 #901B8C #90591B
split-complementary
#1B901F #591B90 #901B51
monochromatic
#082909 #115C14 #1B901F #25C42A #49DD4E
Accessibility & contrast
On white
4.15
#1B901F on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.06
#1B901F on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #1B901F
5.06:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B901F | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##1B901F | 1.00 | 4.15 | 5.06 | 5.06 |
| #FFFFFF | 4.15 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.06 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.06 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#938203
Deuteranopia (green-blind)
#87792C
Tritanopia (blue-blind)
#008C7B
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #1b901f; /* rgb */ color: rgb(27, 144, 31); /* oklch */ color: oklch(57.0% 0.178 143.1);
Tailwind
colors: {
custom: {
50: '#6fb264',
500: '#1b901f',
950: '#000000',
},
}SCSS
$custom: #1b901f; $custom-light: #6fb264; $custom-dark: #000000;
JSON
{
"hex": "#1b901f",
"rgb": {
"r": 27,
"g": 144,
"b": 31
},
"hsl": {
"h": 122.051,
"s": 68.421,
"l": 33.529
},
"oklch": {
"l": 0.57032,
"c": 0.17803,
"h": 143.1
},
"luminance": 0.20278
}Semantic roles & 50–950 ramp
primary
#1B901F
secondary
#BF48BB
accent
#3DE5EB
background
#F7FBF6
surface
#EDF6EB
border
#C8D0C6
text
#091106
muted
#7B807A