#51A656
Closest named color: Mid Green (#50A747). oklch(65.3% 0.142 144.9), rgb(81, 166, 86).
Aa
Black text reads best on this color (6.93:1).
About this color
#51A656 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.142 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.018 away. Black text reads best on it, at 6.93:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #51A656 |
| RGB | rgb(81, 166, 86) |
| HSL | hsl(124, 34%, 48%) |
| OKLCH | oklch(65.3% 0.142 144.9) |
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 #51A656 | 3.02:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #51A656 | 6.93:1 | AA | Lc 47.3 | Large or bold text, headings |
| #51A656 text on white | 3.02:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #51A656 text on black | 6.93:1 | AA | Lc -45.0 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CAE0CA
oklch(88.4% 0.038 145.2)
-
Step 300
300
#A5CDA5
oklch(80.9% 0.07 144.9)
-
Step 400
400
#73B375
oklch(70.7% 0.111 145)
-
Step 500
500 (this color)
#51A656
oklch(65.3% 0.142 144.9)
-
Step 600
600
#268932
oklch(55.5% 0.154 144.9)
-
Step 700
700
#167424
oklch(49% 0.143 144.9)
-
Step 800
800
#175F20
oklch(42.7% 0.119 145)
-
Step 900
900
#1B4E20
oklch(37.7% 0.093 145.2)
-
Step 950
950
#122E13
oklch(27.1% 0.059 144.4)
#51A656 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) | #A99950 | 0.109 |
| Deuteranopia (no green cones) | #9D915B | 0.107 |
| Tritanopia (no blue cones) | #44A293 | 0.087 |
| Achromatopsia (no color) | #949494 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A656
#51A656
oklch(65.3% 0.142 144.9)
- #BA6FBF
#BA6FBF
oklch(65.2% 0.141 324.8)
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 #51A656, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.018
- Muted Green #5FA052 ΔE 0.019
- Fern #63A950 ΔE 0.021
- Dark Pastel Green #56AE57 ΔE 0.024
- Off Green #6BA353 ΔE 0.025
- Algae #54AC68 ΔE 0.025
- Seaweed Green #35AD6B ΔE 0.028
- Flat Green #699D4C ΔE 0.030
Use #51A656 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.