#31A221
Closest named color: Grassy Green (#419C03). oklch(62.5% 0.191 141.4), rgb(49, 162, 33).
Aa
Black text reads best on this color (6.32:1).
About this color
#31A221 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.018 away. Black text reads best on it, at 6.32:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.32:1 |
| White text | 3.32:1 |
Values
| HEX | #31A221 |
| RGB | rgb(49, 162, 33) |
| HSL | hsl(113, 66%, 38%) |
| OKLCH | oklch(62.5% 0.191 141.4) |
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 #31A221 | 3.32:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #31A221 | 6.32:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #31A221 text on white | 3.32:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #31A221 text on black | 6.32:1 | AA | Lc -41.6 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDE
oklch(93.6% 0.028 142)
-
Step 200
200
#C7E2C3
oklch(88.5% 0.051 141.6)
-
Step 300
300
#9FD098
oklch(80.9% 0.093 141.5)
-
Step 400
400
#67B75C
oklch(70.7% 0.149 141.4)
-
Step 500
500 (this color)
#31A221
oklch(62.5% 0.191 141.4)
-
Step 600
600
#188C00
oklch(55.7% 0.185 141.5)
-
Step 700
700
#137500
oklch(49% 0.163 141.4)
-
Step 800
800
#0E6000
oklch(42.6% 0.141 141.4)
-
Step 900
900
#0B5001
oklch(37.6% 0.124 141.4)
-
Step 950
950
#0A2F06
oklch(26.9% 0.079 141.5)
#31A221 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) | #A69200 | 0.132 |
| Deuteranopia (no green cones) | #998A30 | 0.131 |
| Tritanopia (no blue cones) | #169D8A | 0.125 |
| Achromatopsia (no color) | #8D8D8D | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31A221
#31A221
oklch(62.5% 0.191 141.4)
- #BA58CB
#BA58CB
oklch(62.5% 0.19 321.5)
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 #31A221, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.018
- Grass Green #3F9B0B ΔE 0.020
- Kelly Green #02AB2E ΔE 0.025
- Medium Green #39AD48 ΔE 0.041
- Leaf Green #5CA904 ΔE 0.041
- Mid Green #50A747 ΔE 0.043
- Irish Green #019529 ΔE 0.045
- True Green #089404 ΔE 0.047
Use #31A221 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.