#428E45
Closest named color: Fern Green (#548D44). oklch(58% 0.131 144.4), rgb(66, 142, 69).
Aa
Black text reads best on this color (5.18:1).
About this color
#428E45 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.131 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.017 away. Black text reads best on it, at 5.18:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #428E45 |
| RGB | rgb(66, 142, 69) |
| HSL | hsl(122, 37%, 41%) |
| OKLCH | oklch(58% 0.131 144.4) |
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 #428E45 | 4.04:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #428E45 | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #428E45 text on white | 4.04:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #428E45 text on black | 5.18:1 | AA | Lc -34.2 | 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
#CDDFCC
oklch(88.5% 0.032 143.8)
-
Step 300
300
#AACBA9
oklch(80.9% 0.059 144.2)
-
Step 400
400
#7BB07B
oklch(70.6% 0.094 144.5)
-
Step 500
500
#589C59
oklch(63.1% 0.12 144.3)
-
Step 600
600 (this color)
#428E45
oklch(58% 0.131 144.4)
-
Step 700
700
#2C7230
oklch(49.1% 0.122 144.4)
-
Step 800
800
#265D28
oklch(42.8% 0.102 144.2)
-
Step 900
900
#244C25
oklch(37.6% 0.079 144.3)
-
Step 950
950
#162D16
oklch(27.1% 0.051 144)
#428E45 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) | #90823F | 0.099 |
| Deuteranopia (no green cones) | #867C4A | 0.097 |
| Tritanopia (no blue cones) | #368B7D | 0.080 |
| Achromatopsia (no color) | #7E7E7E | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428E45
#428E45
oklch(58% 0.131 144.4)
- #A05DA6
#A05DA6
oklch(58.1% 0.131 324.1)
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 #428E45, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.017
- Light Forest Green #4F9153 ΔE 0.023
- Sea Green #2E8B57 ΔE 0.029
- Moss Green #658B38 ΔE 0.035
- Mossy Green #638B27 ΔE 0.037
- Sap Green #5C8B15 ΔE 0.039
- Kelley Green #009337 ΔE 0.039
- Viridian #1E9167 ΔE 0.042
Use #428E45 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.