#428D41
Closest named color: Fern Green (#548D44). oklch(57.7% 0.134 143.4), rgb(66, 141, 65).
Aa
Black text reads best on this color (5.11:1).
About this color
#428D41 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.134 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.018 away. Black text reads best on it, at 5.11:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #428D41 |
| RGB | rgb(66, 141, 65) |
| HSL | hsl(119, 37%, 40%) |
| OKLCH | oklch(57.7% 0.134 143.4) |
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 #428D41 | 4.10:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #428D41 | 5.11:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #428D41 text on white | 4.10:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #428D41 text on black | 5.11:1 | AA | Lc -33.7 | 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 600.
-
Step 50
50
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE3
oklch(93.6% 0.017 145.4)
-
Step 200
200
#CDDFCB
oklch(88.5% 0.033 142.5)
-
Step 300
300
#AACBA8
oklch(80.8% 0.06 143.5)
-
Step 400
400
#7CB079
oklch(70.6% 0.096 143.2)
-
Step 500
500
#589C56
oklch(63% 0.123 143.4)
-
Step 600
600 (this color)
#428D41
oklch(57.7% 0.134 143.4)
-
Step 700
700
#2D722D
oklch(49.1% 0.124 143.4)
-
Step 800
800
#275D26
oklch(42.8% 0.103 143.2)
-
Step 900
900
#254C24
oklch(37.7% 0.079 143.3)
-
Step 950
950
#162D15
oklch(27.1% 0.052 143.1)
#428D41 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) | #90813A | 0.099 |
| Deuteranopia (no green cones) | #867B46 | 0.097 |
| Tritanopia (no blue cones) | #37897C | 0.085 |
| Achromatopsia (no color) | #7D7D7D | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428D41
#428D41
oklch(57.7% 0.134 143.4)
- #9F5BA6
#9F5BA6
oklch(57.7% 0.134 323.7)
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 #428D41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.018
- Light Forest Green #4F9153 ΔE 0.028
- Sea Green #2E8B57 ΔE 0.031
- Moss Green #658B38 ΔE 0.035
- Mossy Green #638B27 ΔE 0.035
- Sap Green #5C8B15 ΔE 0.036
- Kelley Green #009337 ΔE 0.037
- Forest Green #228B22 ΔE 0.040
Use #428D41 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.