#51AF32
Closest named color: Grass (#5CAC2D). oklch(67.2% 0.183 139.1), rgb(81, 175, 50).
Aa
Black text reads best on this color (7.52:1).
About this color
#51AF32 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.183 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.011 away. Black text reads best on it, at 7.52:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.183) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.52:1 |
| White text | 2.78:1 |
Values
| HEX | #51AF32 |
| RGB | rgb(81, 175, 50) |
| HSL | hsl(105, 56%, 44%) |
| OKLCH | oklch(67.2% 0.183 139.1) |
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 #51AF32 | 2.78:1 | Fails | Lc -58.6 | Large or bold text, headings |
| Black text on #51AF32 | 7.52:1 | AAA | Lc 50.6 | Large or bold text, headings |
| #51AF32 text on white | 2.78:1 | Fails | Lc 53.4 | Large or bold text, headings |
| #51AF32 text on black | 7.52:1 | AAA | Lc -48.5 | 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
#F0F8EE
oklch(97% 0.016 139.4)
-
Step 100
100
#DFF0DB
oklch(93.7% 0.033 139.7)
-
Step 200
200
#C4E4BC
oklch(88.5% 0.064 139.4)
-
Step 300
300
#9AD38B
oklch(81% 0.115 139.2)
-
Step 400
400 (this color)
#51AF32
oklch(67.2% 0.183 139.1)
-
Step 500
500
#39A400
oklch(63.2% 0.2 139.2)
-
Step 600
600
#2F8A00
oklch(55.7% 0.176 139.1)
-
Step 700
700
#267400
oklch(49.1% 0.155 139.2)
-
Step 800
800
#1E5F00
oklch(42.7% 0.135 139.1)
-
Step 900
900
#184F00
oklch(37.6% 0.119 139)
-
Step 950
950
#0B2F00
oklch(26.9% 0.085 139)
#51AF32 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) | #B4A01D | 0.120 |
| Deuteranopia (no green cones) | #A8983E | 0.121 |
| Tritanopia (no blue cones) | #48A996 | 0.125 |
| Achromatopsia (no color) | #9B9B9B | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51AF32
#51AF32
oklch(67.2% 0.183 139.1)
- #C56BDC
#C56BDC
oklch(67.3% 0.183 319.2)
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 #51AF32, closest first.
No curated palette has a color within ΔE 0.04 of #51AF32.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.011
- Leaf Green #5CA904 ΔE 0.021
- Leafy Green #51B73B ΔE 0.022
- Medium Green #39AD48 ΔE 0.024
- Shamrock #01B44C ΔE 0.032
- Leaf #71AA34 ΔE 0.033
- Mid Green #50A747 ΔE 0.033
- Dark Pastel Green #56AE57 ΔE 0.037
Use #51AF32 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.