#51C45D
Closest named color: Algae Green (#21C36F). oklch(73.1% 0.177 145.4), rgb(81, 196, 93).
Aa
Black text reads best on this color (9.40:1).
About this color
#51C45D is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.177 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 0.028 away. Black text reads best on it, at 9.40:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.40:1 |
| White text | 2.23:1 |
Values
| HEX | #51C45D |
| RGB | rgb(81, 196, 93) |
| HSL | hsl(126, 49%, 54%) |
| OKLCH | oklch(73.1% 0.177 145.4) |
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 #51C45D | 2.23:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #51C45D | 9.40:1 | AAA | Lc 60.3 | Content text, not long reading |
| #51C45D text on white | 2.23:1 | Fails | Lc 43.7 | Non-text elements, placeholder text |
| #51C45D text on black | 9.40:1 | AAA | Lc -58.5 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DDF0DD
oklch(93.6% 0.032 145.3)
-
Step 200
200
#C0E5C1
oklch(88.6% 0.062 145.7)
-
Step 300
300
#92D495
oklch(80.9% 0.11 145.6)
-
Step 400
400 (this color)
#51C45D
oklch(73.1% 0.177 145.4)
-
Step 500
500
#00A630
oklch(63.1% 0.196 145.4)
-
Step 600
600
#008C27
oklch(55.7% 0.173 145.4)
-
Step 700
700
#00761F
oklch(49.2% 0.153 145.3)
-
Step 800
800
#006118
oklch(42.8% 0.133 145.4)
-
Step 900
900
#005112
oklch(37.8% 0.118 145.3)
-
Step 950
950
#003008
oklch(26.9% 0.083 145.6)
#51C45D 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) | #C7B454 | 0.134 |
| Deuteranopia (no green cones) | #B8AA65 | 0.133 |
| Tritanopia (no blue cones) | #39BFAD | 0.109 |
| Achromatopsia (no color) | #ADADAD | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51C45D
#51C45D
oklch(73.1% 0.177 145.4)
- #DF7CE4
#DF7CE4
oklch(73.1% 0.178 325.4)
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 #51C45D, closest first.
No curated palette has a color within ΔE 0.04 of #51C45D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.028
- Dark Mint #48C072 ΔE 0.030
- Dark Mint Green #20C073 ΔE 0.036
- Shamrock Green #02C14D ΔE 0.038
- Turtle Green #75B84F ΔE 0.039
- Seaweed #18D17B ΔE 0.041
- Leafy Green #51B73B ΔE 0.042
- Soft Green #6FC276 ΔE 0.043
Use #51C45D 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.