#51A207
Closest named color: Grassy Green (#419C03). oklch(63.5% 0.186 135.7), rgb(81, 162, 7).
Aa
Black text reads best on this color (6.52:1).
About this color
#51A207 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.186 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.024 away. Black text reads best on it, at 6.52:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.186) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.52:1 |
| White text | 3.22:1 |
Values
| HEX | #51A207 |
| RGB | rgb(81, 162, 7) |
| HSL | hsl(91, 92%, 33%) |
| OKLCH | oklch(63.5% 0.186 135.7) |
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 #51A207 | 3.22:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #51A207 | 6.52:1 | AA | Lc 45.0 | Non-text elements, placeholder text |
| #51A207 text on white | 3.22:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #51A207 text on black | 6.52:1 | AA | Lc -42.7 | 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
#F2F7EF
oklch(97% 0.012 133.4)
-
Step 100
100
#E2EEDD
oklch(93.5% 0.026 136.3)
-
Step 200
200
#CBE1C0
oklch(88.5% 0.05 135.1)
-
Step 300
300
#A7CE93
oklch(80.8% 0.091 135.3)
-
Step 400
400
#76B453
oklch(70.6% 0.145 135.5)
-
Step 500
500 (this color)
#51A207
oklch(63.5% 0.186 135.7)
-
Step 600
600
#428700
oklch(55.6% 0.164 135.6)
-
Step 700
700
#367200
oklch(49.2% 0.146 135.8)
-
Step 800
800
#2B5D00
oklch(42.6% 0.126 135.7)
-
Step 900
900
#234E00
oklch(37.8% 0.112 135.7)
-
Step 950
950
#132E02
oklch(26.9% 0.077 135.9)
#51A207 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) | #A89300 | 0.115 |
| Deuteranopia (no green cones) | #9E8D23 | 0.113 |
| Tritanopia (no blue cones) | #4E9C89 | 0.133 |
| Achromatopsia (no color) | #8F8F8F | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A207
#51A207
oklch(63.5% 0.186 135.7)
- #B560D5
#B560D5
oklch(63.5% 0.186 315.9)
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 #51A207, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.024
- Leaf Green #5CA904 ΔE 0.024
- Grass Green #3F9B0B ΔE 0.027
- Grass #5CAC2D ΔE 0.034
- Kelly Green #02AB2E ΔE 0.037
- Mid Green #50A747 ΔE 0.038
- Medium Green #39AD48 ΔE 0.041
- Leaf #71AA34 ΔE 0.049
Use #51A207 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.