#428343
Closest named color: Sea Green (#2E8B57). oklch(55.1% 0.117 144.1), rgb(66, 131, 67).
Aa
White text reads best on this color (4.60:1).
About this color
#428343 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.117 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.029 away. White text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.55:1 |
| White text | 4.60:1 |
Values
| HEX | #428343 |
| RGB | rgb(66, 131, 67) |
| HSL | hsl(121, 33%, 39%) |
| OKLCH | oklch(55.1% 0.117 144.1) |
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 #428343 | 4.60:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #428343 | 4.55:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #428343 text on white | 4.60:1 | AA | Lc 71.8 | Content text, not long reading |
| #428343 text on black | 4.55:1 | AA | Lc -29.9 | Dividers and decoration only |
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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E4EDE4
oklch(93.7% 0.015 145.5)
-
Step 200
200
#CEDFCD
oklch(88.6% 0.03 143.8)
-
Step 300
300
#ADCAAC
oklch(80.9% 0.052 144.2)
-
Step 400
400
#80AF7F
oklch(70.8% 0.085 144.1)
-
Step 500
500
#5F9A5F
oklch(63% 0.107 144.2)
-
Step 600
600 (this color)
#428343
oklch(55.1% 0.117 144.1)
-
Step 700
700
#357036
oklch(49.1% 0.108 144)
-
Step 800
800
#2D5B2D
oklch(42.6% 0.089 143.8)
-
Step 900
900
#294B29
oklch(37.7% 0.069 144)
-
Step 950
950
#182C18
oklch(27% 0.045 144.2)
#428343 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) | #85793E | 0.087 |
| Deuteranopia (no green cones) | #7C7347 | 0.086 |
| Tritanopia (no blue cones) | #398074 | 0.073 |
| Achromatopsia (no color) | #757575 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428343
#428343
oklch(55.1% 0.117 144.1)
- #935898
#935898
oklch(55.1% 0.117 324.2)
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 #428343, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.029
- Jungle Green #048243 ΔE 0.033
- Fern Green #548D44 ΔE 0.037
- Dark Sage #598556 ΔE 0.038
- Military Green #667C3E ΔE 0.042
- Swamp #698339 ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.046
- Tree Green #2A7E19 ΔE 0.049
Use #428343 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.