#1FAA37
Closest named color: Kelly Green (#02AB2E). oklch(64.5% 0.192 145), rgb(31, 170, 55).
Aa
Black text reads best on this color (6.86:1).
About this color
#1FAA37 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.192 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.011 away. Black text reads best on it, at 6.86:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 6.86:1 |
| White text | 3.05:1 |
Values
| HEX | #1FAA37 |
| RGB | rgb(31, 170, 55) |
| HSL | hsl(130, 69%, 39%) |
| OKLCH | oklch(64.5% 0.192 145) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1FAA37 | 3.05:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #1FAA37 | 6.86:1 | AA | Lc 47.2 | Large or bold text, headings |
| #1FAA37 text on white | 3.05:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #1FAA37 text on black | 6.86:1 | AA | Lc -44.9 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDF
oklch(93.6% 0.027 145.4)
-
Step 200
200
#C5E3C4
oklch(88.6% 0.053 144.3)
-
Step 300
300
#9AD19B
oklch(80.8% 0.094 145.1)
-
Step 400
400
#5DB863
oklch(70.6% 0.149 145.1)
-
Step 500
500 (this color)
#1FAA37
oklch(64.5% 0.192 145)
-
Step 600
600
#008C24
oklch(55.6% 0.175 145)
-
Step 700
700
#00761D
oklch(49.2% 0.154 145)
-
Step 800
800
#006116
oklch(42.8% 0.135 145)
-
Step 900
900
#005111
oklch(37.8% 0.119 145.1)
-
Step 950
950
#04300A
oklch(27.1% 0.079 145.1)
#1FAA37 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #AD9A28 | 0.142 |
| Deuteranopia (no green cones) | #9E8F42 | 0.143 |
| Tritanopia (no blue cones) | #00A592 | 0.118 |
| Achromatopsia (no color) | #939393 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1FAA37
#1FAA37
oklch(64.5% 0.192 145)
- #C55CCC
#C55CCC
oklch(64.5% 0.191 325.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1FAA37, closest first.
No curated palette has a color within ΔE 0.04 of #1FAA37.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.011
- Medium Green #39AD48 ΔE 0.023
- Shamrock #01B44C ΔE 0.030
- Mid Green #50A747 ΔE 0.036
- Leaf Green #5CA904 ΔE 0.038
- Grass #5CAC2D ΔE 0.039
- Grassy Green #419C03 ΔE 0.041
- Grass Green #3F9B0B ΔE 0.042
Use #1FAA37 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.