#428F4E
Closest named color: Light Forest Green (#4F9153). oklch(58.5% 0.124 147), rgb(66, 143, 78).
Aa
Black text reads best on this color (5.27:1).
About this color
#428F4E is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.124 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.016 away. Black text reads best on it, at 5.27:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #428F4E |
| RGB | rgb(66, 143, 78) |
| HSL | hsl(129, 37%, 41%) |
| OKLCH | oklch(58.5% 0.124 147) |
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 #428F4E | 3.98:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #428F4E | 5.27:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #428F4E text on white | 3.98:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #428F4E text on black | 5.27:1 | AA | Lc -34.7 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE4
oklch(93.6% 0.016 148.4)
-
Step 200
200
#CCDFCE
oklch(88.5% 0.031 148.4)
-
Step 300
300
#AACBAC
oklch(80.9% 0.056 146.7)
-
Step 400
400
#7BB080
oklch(70.7% 0.089 146.9)
-
Step 500
500
#579C60
oklch(63.1% 0.113 147)
-
Step 600
600 (this color)
#428F4E
oklch(58.5% 0.124 147)
-
Step 700
700
#2A7237
oklch(49.2% 0.116 147)
-
Step 800
800
#255D2E
oklch(42.8% 0.096 146.9)
-
Step 900
900
#234C29
oklch(37.7% 0.075 147.1)
-
Step 950
950
#162D19
oklch(27.2% 0.047 147.2)
#428F4E 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) | #918449 | 0.098 |
| Deuteranopia (no green cones) | #867D52 | 0.096 |
| Tritanopia (no blue cones) | #338C7F | 0.072 |
| Achromatopsia (no color) | #7F7F7F | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428F4E
#428F4E
oklch(58.5% 0.124 147)
- #A25FA2
#A25FA2
oklch(58.5% 0.125 327)
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 #428F4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.016
- Fern Green #548D44 ΔE 0.017
- Sea Green #2E8B57 ΔE 0.024
- Viridian #1E9167 ΔE 0.034
- Moss Green #658B38 ΔE 0.037
- Dark Sage #598556 ΔE 0.041
- Mossy Green #638B27 ΔE 0.042
- Kelley Green #009337 ΔE 0.046
Use #428F4E 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.