#428C27
Closest named color: Forest Green (#228B22). oklch(57.1% 0.154 138.7), rgb(66, 140, 39).
Aa
Black text reads best on this color (5.01:1).
About this color
#428C27 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.154 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.023 away. Black text reads best on it, at 5.01:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #428C27 |
| RGB | rgb(66, 140, 39) |
| HSL | hsl(104, 56%, 35%) |
| OKLCH | oklch(57.1% 0.154 138.7) |
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 #428C27 | 4.18:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #428C27 | 5.01:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #428C27 text on white | 4.18:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #428C27 text on black | 5.01:1 | AA | Lc -33.1 | 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
#E3EDE1
oklch(93.5% 0.019 140.5)
-
Step 200
200
#CDE0C7
oklch(88.6% 0.039 138.2)
-
Step 300
300
#ABCCA1
oklch(81% 0.069 138.5)
-
Step 400
400
#7DB16D
oklch(70.7% 0.11 138.5)
-
Step 500
500
#5A9D44
oklch(63.1% 0.141 138.6)
-
Step 600
600 (this color)
#428C27
oklch(57.1% 0.154 138.7)
-
Step 700
700
#2F7312
oklch(49.2% 0.144 138.6)
-
Step 800
800
#285D14
oklch(42.6% 0.118 138.7)
-
Step 900
900
#254D18
oklch(37.8% 0.093 138.8)
-
Step 950
950
#172D0F
oklch(27% 0.059 138.1)
#428C27 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) | #908017 | 0.100 |
| Deuteranopia (no green cones) | #877931 | 0.102 |
| Tritanopia (no blue cones) | #3C8778 | 0.106 |
| Achromatopsia (no color) | #7C7C7C | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428C27
#428C27
oklch(57.1% 0.154 138.7)
- #9D55B1
#9D55B1
oklch(57.1% 0.155 318.6)
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 #428C27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.023
- Sap Green #5C8B15 ΔE 0.025
- Kelley Green #009337 ΔE 0.030
- Emerald Green #028F1E ΔE 0.033
- Mossy Green #638B27 ΔE 0.035
- Irish Green #019529 ΔE 0.035
- Fern Green #548D44 ΔE 0.036
- Dark Grass Green #388004 ΔE 0.040
Use #428C27 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.