#51C15C
Closest named color: Algae Green (#21C36F). oklch(72.3% 0.174 145.3), rgb(81, 193, 92).
Aa
Black text reads best on this color (9.13:1).
About this color
#51C15C is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.174 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.026 away. Black text reads best on it, at 9.13:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.13:1 |
| White text | 2.29:1 |
Values
| HEX | #51C15C |
| RGB | rgb(81, 193, 92) |
| HSL | hsl(126, 47%, 54%) |
| OKLCH | oklch(72.3% 0.174 145.3) |
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 #51C15C | 2.29:1 | Fails | Lc -49.9 | Large or bold text, headings |
| Black text on #51C15C | 9.13:1 | AAA | Lc 59.0 | Large or bold text, headings |
| #51C15C text on white | 2.29:1 | Fails | Lc 45.0 | Large or bold text, headings |
| #51C15C text on black | 9.13:1 | AAA | Lc -57.1 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DDF0DD
oklch(93.6% 0.032 145.3)
-
Step 200
200
#C1E4C1
oklch(88.4% 0.06 145)
-
Step 300
300
#93D495
oklch(81% 0.11 145.2)
-
Step 400
400 (this color)
#51C15C
oklch(72.3% 0.174 145.3)
-
Step 500
500
#00A62F
oklch(63% 0.197 145.3)
-
Step 600
600
#008C26
oklch(55.6% 0.174 145.3)
-
Step 700
700
#00761F
oklch(49.2% 0.153 145.3)
-
Step 800
800
#006117
oklch(42.8% 0.134 145.2)
-
Step 900
900
#005112
oklch(37.8% 0.118 145.3)
-
Step 950
950
#003007
oklch(26.9% 0.084 145.2)
#51C15C 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) | #C4B153 | 0.132 |
| Deuteranopia (no green cones) | #B5A763 | 0.131 |
| Tritanopia (no blue cones) | #3BBCAA | 0.106 |
| Achromatopsia (no color) | #ABABAB | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C15C
#51C15C
oklch(72.3% 0.174 145.3)
- #DB7BE0
#DB7BE0
oklch(72.3% 0.173 325.4)
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 #51C15C, closest first.
No curated palette has a color within ΔE 0.04 of #51C15C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.026
- Dark Mint #48C072 ΔE 0.026
- Dark Mint Green #20C073 ΔE 0.032
- Turtle Green #75B84F ΔE 0.034
- Cool Green #33B864 ΔE 0.036
- Leafy Green #51B73B ΔE 0.036
- Shamrock Green #02C14D ΔE 0.036
- Soft Green #6FC276 ΔE 0.043
Use #51C15C 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.