#51BF07
Closest named color: Frog Green (#58BC08). oklch(71.2% 0.217 137.8), rgb(81, 191, 7).
Aa
Black text reads best on this color (8.80:1).
About this color
#51BF07 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.217 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Frog Green (#58BC08), ΔE 0.009 away. Black text reads best on it, at 8.80:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.217) |
| Temperature | in between |
| Nearest name | Frog Green (#58BC08) |
| Black text | 8.80:1 |
| White text | 2.38:1 |
Values
| HEX | #51BF07 |
| RGB | rgb(81, 191, 7) |
| HSL | hsl(96, 93%, 39%) |
| OKLCH | oklch(71.2% 0.217 137.8) |
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 #51BF07 | 2.38:1 | Fails | Lc -51.5 | Large or bold text, headings |
| Black text on #51BF07 | 8.80:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #51BF07 text on white | 2.38:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #51BF07 text on black | 8.80:1 | AAA | Lc -55.5 | 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
#F0F9ED
oklch(97.2% 0.018 137.8)
-
Step 100
100
#DEF1D7
oklch(93.7% 0.04 137.2)
-
Step 200
200
#C1E6B5
oklch(88.6% 0.076 138.1)
-
Step 300
300
#94D57D
oklch(80.8% 0.136 137.9)
-
Step 400
400 (this color)
#51BF07
oklch(71.2% 0.217 137.8)
-
Step 500
500
#43A300
oklch(63.2% 0.195 137.9)
-
Step 600
600
#378900
oklch(55.7% 0.172 137.9)
-
Step 700
700
#2D7300
oklch(49.1% 0.151 137.9)
-
Step 800
800
#245E00
oklch(42.6% 0.131 137.7)
-
Step 900
900
#1C4F00
oklch(37.8% 0.117 138)
-
Step 950
950
#0E2F00
oklch(27% 0.083 137.8)
#51BF07 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) | #C5AD00 | 0.141 |
| Deuteranopia (no green cones) | #B8A42A | 0.140 |
| Tritanopia (no blue cones) | #47B8A2 | 0.152 |
| Achromatopsia (no color) | #A8A8A8 | 0.218 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BF07
#51BF07
oklch(71.2% 0.217 137.8)
- #D86CF8
#D86CF8
oklch(71.1% 0.218 317.9)
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 #51BF07, closest first.
No curated palette has a color within ΔE 0.04 of #51BF07.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Frog Green #58BC08 ΔE 0.009
- Leafy Green #51B73B ΔE 0.036
- Lime Green #32CD32 ΔE 0.038
- Shamrock Green #02C14D ΔE 0.039
- Dark Lime Green #7EBD01 ΔE 0.041
- Apple #6ECB3C ΔE 0.049
- Dark Lime #84B701 ΔE 0.050
- Apple Green #76CD26 ΔE 0.055
Use #51BF07 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.