Fern #63A950
Fern is a medium-light, vivid green with hex code #63A950 and RGB rgb(99, 169, 80).
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Black text reads best on this color (7.32:1).
About this color
#63A950 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.142 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. It is the named color Fern. Black text reads best on it, at 7.32:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Fern |
| Black text | 7.32:1 |
| White text | 2.86:1 |
Colors that go with Fern
Matches found by rotating Fern around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Fern
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Fern, closest first.
Similar named colors
The eight named colors closest to Fern, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.016
- Off Green #6BA353 ΔE 0.020
- Mid Green #50A747 ΔE 0.023
- Asparagus #77AB56 ΔE 0.025
- Algae #54AC68 ΔE 0.026
- Leaf #71AA34 ΔE 0.027
- Muted Green #5FA052 ΔE 0.028
- Boring Green #63B365 ΔE 0.032
More about Fern
How to make Fern
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 4 parts yellow
- 3 parts blue
- 1 part white
Recipe result: #68A747, a difference of ΔE 0.009 from Fern. That is very close: most people will not see the difference.
Codes for Fern in every format
| HEX | #63A950 |
| RGB | rgb(99, 169, 80) |
| HSL | hsl(107, 36%, 49%) |
| OKLCH | oklch(66.8% 0.142 139.3) |
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 #63A950 | 2.86:1 | Fails | Lc -60.0 | Large or bold text, headings |
| Black text on #63A950 | 7.32:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #63A950 text on white | 2.86:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #63A950 text on black | 7.32:1 | AAA | Lc -47.1 | Large or bold text, headings |
Shades and tints of Fern
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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EDE1
oklch(93.5% 0.019 140.5)
-
Step 200
200
#CCE0C8
oklch(88.5% 0.039 140.5)
-
Step 300
300
#AACCA1
oklch(80.9% 0.07 139.2)
-
Step 400
400
#7BB16D
oklch(70.6% 0.111 139.3)
-
Step 500
500 (this color)
#63A950
oklch(66.8% 0.142 139.3)
-
Step 600
600
#3B8822
oklch(55.7% 0.155 139.3)
-
Step 700
700
#2C7314
oklch(49.1% 0.144 139.4)
-
Step 800
800
#265E14
oklch(42.8% 0.12 139.3)
-
Step 900
900
#244D19
oklch(37.7% 0.093 139.5)
-
Step 950
950
#162D10
oklch(27% 0.058 139.5)
Fern 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) | #AD9C48 | 0.097 |
| Deuteranopia (no green cones) | #A49656 | 0.097 |
| Tritanopia (no blue cones) | #5EA495 | 0.097 |
| Achromatopsia (no color) | #989898 | 0.143 |
Use Fern 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.