#428B17
Closest named color: Forest Green (#228B22). oklch(56.8% 0.162 137.1), rgb(66, 139, 23).
Aa
Black text reads best on this color (4.93:1).
About this color
#428B17 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.162 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 0.021 away. Black text reads best on it, at 4.93:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.93:1 |
| White text | 4.25:1 |
Values
| HEX | #428B17 |
| RGB | rgb(66, 139, 23) |
| HSL | hsl(98, 72%, 32%) |
| OKLCH | oklch(56.8% 0.162 137.1) |
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 #428B17 | 4.25:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #428B17 | 4.93:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #428B17 text on white | 4.25:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #428B17 text on black | 4.93:1 | AA | Lc -32.6 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EDE0
oklch(93.5% 0.02 138.4)
-
Step 200
200
#CDE0C6
oklch(88.5% 0.041 137.2)
-
Step 300
300
#ABCC9E
oklch(80.9% 0.072 136.9)
-
Step 400
400
#7DB168
oklch(70.6% 0.116 137.1)
-
Step 500
500
#5B9D3C
oklch(63% 0.148 137)
-
Step 600
600 (this color)
#428B17
oklch(56.8% 0.162 137.1)
-
Step 700
700
#317300
oklch(49.3% 0.149 137)
-
Step 800
800
#295D08
oklch(42.6% 0.124 137)
-
Step 900
900
#264D13
oklch(37.8% 0.097 137.2)
-
Step 950
950
#172D0D
oklch(27% 0.061 137.1)
#428B17 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) | #907E00 | 0.102 |
| Deuteranopia (no green cones) | #867825 | 0.102 |
| Tritanopia (no blue cones) | #3D8676 | 0.114 |
| Achromatopsia (no color) | #7B7B7B | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428B17
#428B17
oklch(56.8% 0.162 137.1)
- #9C52B4
#9C52B4
oklch(56.7% 0.162 317.3)
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 #428B17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.021
- Sap Green #5C8B15 ΔE 0.027
- Emerald Green #028F1E ΔE 0.029
- Kelley Green #009337 ΔE 0.033
- Irish Green #019529 ΔE 0.035
- Dark Grass Green #388004 ΔE 0.035
- True Green #089404 ΔE 0.038
- Mossy Green #638B27 ΔE 0.039
Use #428B17 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.