#51AE4D
Closest named color: Dark Pastel Green (#56AE57). oklch(67.2% 0.161 142.8), rgb(81, 174, 77).
Aa
Black text reads best on this color (7.51:1).
About this color
#51AE4D is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.161 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.013 away. Black text reads best on it, at 7.51:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.161) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.51:1 |
| White text | 2.79:1 |
Values
| HEX | #51AE4D |
| RGB | rgb(81, 174, 77) |
| HSL | hsl(118, 39%, 49%) |
| OKLCH | oklch(67.2% 0.161 142.8) |
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 #51AE4D | 2.79:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #51AE4D | 7.51:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #51AE4D text on white | 2.79:1 | Fails | Lc 53.5 | Large or bold text, headings |
| #51AE4D text on black | 7.51:1 | AAA | Lc -48.3 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDE
oklch(93.6% 0.028 143.7)
-
Step 200
200
#C4E3C2
oklch(88.4% 0.055 143.5)
-
Step 300
300
#9AD296
oklch(81% 0.101 143)
-
Step 400
400 (this color)
#51AE4D
oklch(67.2% 0.161 142.8)
-
Step 500
500
#14A617
oklch(63% 0.206 142.8)
-
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
#043004
oklch(27% 0.085 142.8)
#51AE4D 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) | #B2A044 | 0.117 |
| Deuteranopia (no green cones) | #A59754 | 0.117 |
| Tritanopia (no blue cones) | #44A998 | 0.103 |
| Achromatopsia (no color) | #9B9B9B | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51AE4D
#51AE4D
oklch(67.2% 0.161 142.8)
- #C470CF
#C470CF
oklch(67.2% 0.161 322.8)
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 #51AE4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.013
- Medium Green #39AD48 ΔE 0.019
- Mid Green #50A747 ΔE 0.020
- Fern #63A950 ΔE 0.022
- Grass #5CAC2D ΔE 0.025
- Leaf #71AA34 ΔE 0.031
- Cool Green #33B864 ΔE 0.032
- Algae #54AC68 ΔE 0.034
Use #51AE4D 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.