#51C04D
Closest named color: Leafy Green (#51B73B). oklch(71.9% 0.185 142.8), rgb(81, 192, 77).
Aa
Black text reads best on this color (8.99:1).
About this color
#51C04D is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.185 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.026 away. Black text reads best on it, at 8.99:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.185) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.99:1 |
| White text | 2.33:1 |
Values
| HEX | #51C04D |
| RGB | rgb(81, 192, 77) |
| HSL | hsl(118, 48%, 53%) |
| OKLCH | oklch(71.9% 0.185 142.8) |
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 #51C04D | 2.33:1 | Fails | Lc -50.6 | Large or bold text, headings |
| Black text on #51C04D | 8.99:1 | AAA | Lc 58.3 | Large or bold text, headings |
| #51C04D text on white | 2.33:1 | Fails | Lc 45.7 | Large or bold text, headings |
| #51C04D text on black | 8.99:1 | AAA | Lc -56.4 | 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
#DEF0DC
oklch(93.6% 0.033 142.5)
-
Step 200
200
#C1E5BE
oklch(88.6% 0.065 143)
-
Step 300
300
#94D48F
oklch(80.9% 0.115 142.7)
-
Step 400
400 (this color)
#51C04D
oklch(71.9% 0.185 142.8)
-
Step 500
500
#00A70A
oklch(63.1% 0.213 142.8)
-
Step 600
600
#008C07
oklch(55.5% 0.187 142.8)
-
Step 700
700
#007605
oklch(49% 0.165 142.8)
-
Step 800
800
#006103
oklch(42.7% 0.144 142.8)
-
Step 900
900
#005102
oklch(37.7% 0.127 142.8)
-
Step 950
950
#003101
oklch(27.1% 0.091 142.9)
#51C04D 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) | #C4AF41 | 0.134 |
| Deuteranopia (no green cones) | #B6A656 | 0.133 |
| Tritanopia (no blue cones) | #3FBBA7 | 0.118 |
| Achromatopsia (no color) | #AAAAAA | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C04D
#51C04D
oklch(71.9% 0.185 142.8)
- #D977E6
#D977E6
oklch(71.8% 0.184 322.8)
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 #51C04D, closest first.
No curated palette has a color within ΔE 0.04 of #51C04D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.026
- Shamrock Green #02C14D ΔE 0.029
- Frog Green #58BC08 ΔE 0.035
- Algae Green #21C36F ΔE 0.036
- Turtle Green #75B84F ΔE 0.037
- Dark Mint #48C072 ΔE 0.040
- Cool Green #33B864 ΔE 0.041
- Dark Mint Green #20C073 ΔE 0.043
Use #51C04D 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.