#1FB20B
Closest named color: Kelly Green (#02AB2E). oklch(66.5% 0.219 141.9), rgb(31, 178, 11).
Aa
Black text reads best on this color (7.43:1).
About this color
#1FB20B is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.219 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.029 away. Black text reads best on it, at 7.43:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.219) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 7.43:1 |
| White text | 2.82:1 |
Values
| HEX | #1FB20B |
| RGB | rgb(31, 178, 11) |
| HSL | hsl(113, 88%, 37%) |
| OKLCH | oklch(66.5% 0.219 141.9) |
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 #1FB20B | 2.82:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #1FB20B | 7.43:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #1FB20B text on white | 2.82:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #1FB20B text on black | 7.43:1 | AAA | Lc -48.3 | Large or bold text, headings |
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
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DFF0DC
oklch(93.7% 0.032 141)
-
Step 200
200
#C4E4BF
oklch(88.6% 0.06 141.3)
-
Step 300
300
#99D292
oklch(80.8% 0.106 141.9)
-
Step 400
400
#59BA4F
oklch(70.6% 0.172 141.8)
-
Step 500
500 (this color)
#1FB20B
oklch(66.5% 0.219 141.9)
-
Step 600
600
#118C00
oklch(55.6% 0.187 141.9)
-
Step 700
700
#0D7600
oklch(49.2% 0.165 141.8)
-
Step 800
800
#086100
oklch(42.8% 0.144 141.9)
-
Step 900
900
#065100
oklch(37.8% 0.127 141.8)
-
Step 950
950
#023000
oklch(26.9% 0.09 141.9)
#1FB20B 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) | #B6A000 | 0.154 |
| Deuteranopia (no green cones) | #A79629 | 0.151 |
| Tritanopia (no blue cones) | #00AC97 | 0.145 |
| Achromatopsia (no color) | #9A9A9A | 0.220 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1FB20B
#1FB20B
oklch(66.5% 0.219 141.9)
- #CE59E1
#CE59E1
oklch(66.3% 0.219 321.8)
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 #1FB20B, closest first.
No curated palette has a color within ΔE 0.04 of #1FB20B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.029
- Shamrock #01B44C ΔE 0.038
- Leaf Green #5CA904 ΔE 0.041
- Leafy Green #51B73B ΔE 0.044
- Grass #5CAC2D ΔE 0.046
- Medium Green #39AD48 ΔE 0.047
- Frog Green #58BC08 ΔE 0.047
- Shamrock Green #02C14D ΔE 0.050
Use #1FB20B 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.