#428E0A
Closest named color: Forest Green (#228B22). oklch(57.5% 0.17 136.7), rgb(66, 142, 10).
Aa
Black text reads best on this color (5.10:1).
About this color
#428E0A is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.170 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.025 away. Black text reads best on it, at 5.10:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #428E0A |
| RGB | rgb(66, 142, 10) |
| HSL | hsl(95, 87%, 30%) |
| OKLCH | oklch(57.5% 0.17 136.7) |
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 #428E0A | 4.11:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #428E0A | 5.10:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #428E0A text on white | 4.11:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #428E0A text on black | 5.10:1 | AA | Lc -33.8 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E3EEDF
oklch(93.7% 0.023 137.2)
-
Step 200
200
#CDE0C5
oklch(88.5% 0.042 136.3)
-
Step 300
300
#AACD9C
oklch(81% 0.077 136.9)
-
Step 400
400
#7CB264
oklch(70.7% 0.122 136.6)
-
Step 500
500
#599E35
oklch(63.1% 0.156 136.6)
-
Step 600
600 (this color)
#428E0A
oklch(57.5% 0.17 136.7)
-
Step 700
700
#327200
oklch(49% 0.148 136.7)
-
Step 800
800
#285E00
oklch(42.8% 0.129 136.7)
-
Step 900
900
#254D0E
oklch(37.7% 0.101 136.7)
-
Step 950
950
#162D0B
oklch(26.9% 0.064 136.9)
#428E0A 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) | #938100 | 0.106 |
| Deuteranopia (no green cones) | #897B1F | 0.105 |
| Tritanopia (no blue cones) | #3D8878 | 0.121 |
| Achromatopsia (no color) | #7D7D7D | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428E0A
#428E0A
oklch(57.5% 0.17 136.7)
- #A052BA
#A052BA
oklch(57.5% 0.17 317)
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 #428E0A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.025
- Emerald Green #028F1E ΔE 0.028
- Sap Green #5C8B15 ΔE 0.028
- Irish Green #019529 ΔE 0.030
- True Green #089404 ΔE 0.031
- Kelley Green #009337 ΔE 0.032
- Grass Green #3F9B0B ΔE 0.038
- Grassy Green #419C03 ΔE 0.042
Use #428E0A 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.