#428423
Closest named color: Dark Grass Green (#388004). oklch(54.9% 0.146 137.6), rgb(66, 132, 35).
Aa
White text reads best on this color (4.60:1).
About this color
#428423 is a medium-dark, vivid green. In OKLCH its lightness is 55%, its chroma 0.146 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grass Green (#388004), ΔE 0.022 away. White text reads best on it, at 4.60:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Dark Grass Green (#388004) |
| Black text | 4.55:1 |
| White text | 4.60:1 |
Values
| HEX | #428423 |
| RGB | rgb(66, 132, 35) |
| HSL | hsl(101, 58%, 33%) |
| OKLCH | oklch(54.9% 0.146 137.6) |
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 #428423 | 4.60:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #428423 | 4.55:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #428423 text on white | 4.60:1 | AA | Lc 71.7 | Content text, not long reading |
| #428423 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE1
oklch(93.6% 0.019 137.8)
-
Step 200
200
#CEDFC8
oklch(88.5% 0.036 137.5)
-
Step 300
300
#ADCBA2
oklch(80.9% 0.065 137.3)
-
Step 400
400
#80B06F
oklch(70.7% 0.105 137.8)
-
Step 500
500
#5F9C47
oklch(63.1% 0.134 137.7)
-
Step 600
600 (this color)
#428423
oklch(54.9% 0.146 137.6)
-
Step 700
700
#357117
oklch(49% 0.136 137.6)
-
Step 800
800
#2D5C17
oklch(42.6% 0.112 137.5)
-
Step 900
900
#294C1A
oklch(37.7% 0.087 137.4)
-
Step 950
950
#182D10
oklch(27.1% 0.057 137.8)
#428423 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) | #887813 | 0.093 |
| Deuteranopia (no green cones) | #80732C | 0.094 |
| Tritanopia (no blue cones) | #3E7F71 | 0.103 |
| Achromatopsia (no color) | #757575 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428423
#428423
oklch(54.9% 0.146 137.6)
- #9352A8
#9352A8
oklch(54.9% 0.145 317.4)
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 #428423, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grass Green #388004 ΔE 0.022
- Forest Green #228B22 ΔE 0.028
- Tree Green #2A7E19 ΔE 0.030
- Sap Green #5C8B15 ΔE 0.037
- Jungle Green #048243 ΔE 0.042
- Emerald Green #028F1E ΔE 0.043
- Mossy Green #638B27 ΔE 0.044
- Green #008000 ΔE 0.045
Use #428423 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.