#64AC57
Closest named color: Fern (#63A950). oklch(67.7% 0.139 140.7), rgb(100, 172, 87).
Aa
Black text reads best on this color (7.58:1).
About this color
#64AC57 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.139 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.010 away. Black text reads best on it, at 7.58:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.58:1 |
| White text | 2.77:1 |
Values
| HEX | #64AC57 |
| RGB | rgb(100, 172, 87) |
| HSL | hsl(111, 34%, 51%) |
| OKLCH | oklch(67.7% 0.139 140.7) |
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 #64AC57 | 2.77:1 | Fails | Lc -58.5 | Large or bold text, headings |
| Black text on #64AC57 | 7.58:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #64AC57 text on white | 2.77:1 | Fails | Lc 53.3 | Large or bold text, headings |
| #64AC57 text on black | 7.58:1 | AAA | Lc -48.6 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C8E2C4
oklch(88.6% 0.049 141.4)
-
Step 300
300
#A2CF9A
oklch(80.9% 0.087 140.8)
-
Step 400
400 (this color)
#64AC57
oklch(67.7% 0.139 140.7)
-
Step 500
500
#40A22D
oklch(63.1% 0.178 140.7)
-
Step 600
600
#228B00
oklch(55.6% 0.182 140.6)
-
Step 700
700
#1B7500
oklch(49.1% 0.16 140.7)
-
Step 800
800
#146000
oklch(42.7% 0.14 140.7)
-
Step 900
900
#154F08
oklch(37.6% 0.115 140.7)
-
Step 950
950
#0E2F08
oklch(27.1% 0.075 140.8)
#64AC57 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) | #B09F50 | 0.098 |
| Deuteranopia (no green cones) | #A6995D | 0.098 |
| Tritanopia (no blue cones) | #5EA798 | 0.092 |
| Achromatopsia (no color) | #9B9B9B | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64AC57
#64AC57
oklch(67.7% 0.139 140.7)
- #BD79CB
#BD79CB
oklch(67.7% 0.138 320.6)
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 #64AC57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.010
- Dark Pastel Green #56AE57 ΔE 0.013
- Asparagus #77AB56 ΔE 0.020
- Boring Green #63B365 ΔE 0.022
- Algae #54AC68 ΔE 0.022
- Off Green #6BA353 ΔE 0.025
- Mid Green #50A747 ΔE 0.030
- Dull Green #74A662 ΔE 0.030
Use #64AC57 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.