#51AE47
Closest named color: Medium Green (#39AD48). oklch(67.1% 0.167 141.8), rgb(81, 174, 71).
Aa
Black text reads best on this color (7.49:1).
About this color
#51AE47 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.167 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.017 away. Black text reads best on it, at 7.49:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.167) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #51AE47 |
| RGB | rgb(81, 174, 71) |
| HSL | hsl(114, 42%, 48%) |
| OKLCH | oklch(67.1% 0.167 141.8) |
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 #51AE47 | 2.80:1 | Fails | Lc -58.9 | Large or bold text, headings |
| Black text on #51AE47 | 7.49:1 | AAA | Lc 50.4 | Large or bold text, headings |
| #51AE47 text on white | 2.80:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #51AE47 text on black | 7.49:1 | AAA | Lc -48.2 | 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 400.
-
Step 50
50
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DFEFDD
oklch(93.5% 0.029 142.2)
-
Step 200
200
#C4E3C0
oklch(88.4% 0.058 142)
-
Step 300
300
#9AD293
oklch(80.9% 0.104 141.8)
-
Step 400
400 (this color)
#51AE47
oklch(67.1% 0.167 141.8)
-
Step 500
500
#19A600
oklch(63% 0.211 141.7)
-
Step 600
600
#138C00
oklch(55.6% 0.186 141.8)
-
Step 700
700
#0E7600
oklch(49.2% 0.165 141.8)
-
Step 800
800
#0A6100
oklch(42.8% 0.143 141.7)
-
Step 900
900
#075100
oklch(37.8% 0.126 141.7)
-
Step 950
950
#043001
oklch(26.9% 0.088 141.6)
#51AE47 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) | #B29F3C | 0.118 |
| Deuteranopia (no green cones) | #A6974F | 0.118 |
| Tritanopia (no blue cones) | #45A998 | 0.109 |
| Achromatopsia (no color) | #9A9A9A | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51AE47
#51AE47
oklch(67.1% 0.167 141.8)
- #C46ED2
#C46ED2
oklch(67.1% 0.168 321.9)
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 #51AE47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.017
- Dark Pastel Green #56AE57 ΔE 0.018
- Grass #5CAC2D ΔE 0.019
- Mid Green #50A747 ΔE 0.021
- Fern #63A950 ΔE 0.025
- Leaf #71AA34 ΔE 0.029
- Leafy Green #51B73B ΔE 0.031
- Shamrock #01B44C ΔE 0.033
Use #51AE47 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.