#31AB4B
Closest named color: Medium Green (#39AD48). oklch(65.4% 0.172 146.8), rgb(49, 171, 75).
Aa
Black text reads best on this color (7.05:1).
About this color
#31AB4B is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.172 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.009 away. Black text reads best on it, at 7.05:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.05:1 |
| White text | 2.97:1 |
Values
| HEX | #31AB4B |
| RGB | rgb(49, 171, 75) |
| HSL | hsl(133, 55%, 43%) |
| OKLCH | oklch(65.4% 0.172 146.8) |
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 #31AB4B | 2.97:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #31AB4B | 7.05:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #31AB4B text on white | 2.97:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #31AB4B text on black | 7.05:1 | AAA | Lc -45.9 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFE1
oklch(93.7% 0.024 147.3)
-
Step 200
200
#C6E2C8
oklch(88.5% 0.046 147.2)
-
Step 300
300
#9DD0A1
oklch(80.9% 0.084 146.8)
-
Step 400
400
#62B76D
oklch(70.7% 0.135 146.8)
-
Step 500
500 (this color)
#31AB4B
oklch(65.4% 0.172 146.8)
-
Step 600
600
#008B30
oklch(55.5% 0.165 146.9)
-
Step 700
700
#007527
oklch(49% 0.146 146.9)
-
Step 800
800
#00601F
oklch(42.6% 0.127 147)
-
Step 900
900
#005018
oklch(37.6% 0.112 146.9)
-
Step 950
950
#072F0F
oklch(26.9% 0.071 146.7)
#31AB4B 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) | #AD9C42 | 0.133 |
| Deuteranopia (no green cones) | #9F9252 | 0.132 |
| Tritanopia (no blue cones) | #00A796 | 0.103 |
| Achromatopsia (no color) | #969696 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31AB4B
#31AB4B
oklch(65.4% 0.172 146.8)
- #C565C6
#C565C6
oklch(65.4% 0.172 326.9)
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 #31AB4B, closest first.
No curated palette has a color within ΔE 0.04 of #31AB4B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.009
- Mid Green #50A747 ΔE 0.021
- Shamrock #01B44C ΔE 0.027
- Kelly Green #02AB2E ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.032
- Jade Green #2BAF6A ΔE 0.034
- Grass #5CAC2D ΔE 0.035
- Seaweed Green #35AD6B ΔE 0.037
Use #31AB4B 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.