#51A652
Closest named color: Mid Green (#50A747). oklch(65.2% 0.146 143.9), rgb(81, 166, 82).
Aa
Black text reads best on this color (6.92:1).
About this color
#51A652 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.146 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.013 away. Black text reads best on it, at 6.92:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.92:1 |
| White text | 3.03:1 |
Values
| HEX | #51A652 |
| RGB | rgb(81, 166, 82) |
| HSL | hsl(121, 34%, 48%) |
| OKLCH | oklch(65.2% 0.146 143.9) |
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 #51A652 | 3.03:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #51A652 | 6.92:1 | AA | Lc 47.2 | Large or bold text, headings |
| #51A652 text on white | 3.03:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #51A652 text on black | 6.92:1 | AA | Lc -44.9 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE0C9
oklch(88.4% 0.039 144)
-
Step 300
300
#A5CDA4
oklch(80.8% 0.071 144.3)
-
Step 400
400
#73B372
oklch(70.7% 0.114 143.9)
-
Step 500
500 (this color)
#51A652
oklch(65.2% 0.146 143.9)
-
Step 600
600
#278A2D
oklch(55.7% 0.159 143.9)
-
Step 700
700
#17751F
oklch(49.2% 0.148 143.9)
-
Step 800
800
#185F1C
oklch(42.7% 0.122 143.8)
-
Step 900
900
#1C4E1D
oklch(37.7% 0.095 143.7)
-
Step 950
950
#122E12
oklch(27.1% 0.06 143.7)
#51A652 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) | #A9994B | 0.109 |
| Deuteranopia (no green cones) | #9D9158 | 0.108 |
| Tritanopia (no blue cones) | #45A293 | 0.092 |
| Achromatopsia (no color) | #949494 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A652
#51A652
oklch(65.2% 0.146 143.9)
- #BA6EC2
#BA6EC2
oklch(65.2% 0.146 323.6)
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 #51A652, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.013
- Fern #63A950 ΔE 0.020
- Muted Green #5FA052 ΔE 0.020
- Dark Pastel Green #56AE57 ΔE 0.024
- Off Green #6BA353 ΔE 0.026
- Algae #54AC68 ΔE 0.028
- Medium Green #39AD48 ΔE 0.030
- Seaweed Green #35AD6B ΔE 0.031
Use #51A652 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.