#51BD52
Closest named color: Leafy Green (#51B73B). oklch(71.1% 0.177 143.6), rgb(81, 189, 82).
Aa
Black text reads best on this color (8.75:1).
About this color
#51BD52 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.177 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.023 away. Black text reads best on it, at 8.75:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.75:1 |
| White text | 2.39:1 |
Values
| HEX | #51BD52 |
| RGB | rgb(81, 189, 82) |
| HSL | hsl(121, 45%, 53%) |
| OKLCH | oklch(71.1% 0.177 143.6) |
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 #51BD52 | 2.39:1 | Fails | Lc -51.9 | Large or bold text, headings |
| Black text on #51BD52 | 8.75:1 | AAA | Lc 57.1 | Large or bold text, headings |
| #51BD52 text on white | 2.39:1 | Fails | Lc 46.9 | Large or bold text, headings |
| #51BD52 text on black | 8.75:1 | AAA | Lc -55.1 | 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
#DEF0DD
oklch(93.7% 0.032 143.9)
-
Step 200
200
#C2E4C0
oklch(88.5% 0.06 143.6)
-
Step 300
300
#95D392
oklch(80.8% 0.11 143.4)
-
Step 400
400 (this color)
#51BD52
oklch(71.1% 0.177 143.6)
-
Step 500
500
#00A71C
oklch(63.2% 0.207 143.6)
-
Step 600
600
#008C16
oklch(55.5% 0.182 143.6)
-
Step 700
700
#007610
oklch(49.1% 0.161 143.5)
-
Step 800
800
#00610C
oklch(42.7% 0.14 143.6)
-
Step 900
900
#005108
oklch(37.7% 0.124 143.6)
-
Step 950
950
#003103
oklch(27.2% 0.089 143.6)
#51BD52 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) | #C1AD48 | 0.131 |
| Deuteranopia (no green cones) | #B3A45A | 0.129 |
| Tritanopia (no blue cones) | #3FB8A5 | 0.111 |
| Achromatopsia (no color) | #A7A7A7 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BD52
#51BD52
oklch(71.1% 0.177 143.6)
- #D677E0
#D677E0
oklch(71.2% 0.177 323.6)
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 #51BD52, closest first.
No curated palette has a color within ΔE 0.04 of #51BD52.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.023
- Cool Green #33B864 ΔE 0.032
- Shamrock Green #02C14D ΔE 0.032
- Turtle Green #75B84F ΔE 0.032
- Algae Green #21C36F ΔE 0.032
- Dark Mint #48C072 ΔE 0.033
- Dark Mint Green #20C073 ΔE 0.037
- Frog Green #58BC08 ΔE 0.041
Use #51BD52 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.