#428537
Closest named color: Fern Green (#548D44). oklch(55.4% 0.132 140.9), rgb(66, 133, 55).
Aa
Black text reads best on this color (4.64:1).
About this color
#428537 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.132 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.034 away. Black text reads best on it, at 4.64:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #428537 |
| RGB | rgb(66, 133, 55) |
| HSL | hsl(112, 41%, 37%) |
| OKLCH | oklch(55.4% 0.132 140.9) |
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 #428537 | 4.52:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #428537 | 4.64:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #428537 text on white | 4.52:1 | AA | Lc 71.2 | Content text, not long reading |
| #428537 text on black | 4.64:1 | AA | Lc -30.5 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E4EDE2
oklch(93.6% 0.017 140)
-
Step 200
200
#CEDFCB
oklch(88.5% 0.033 141)
-
Step 300
300
#ACCBA7
oklch(80.9% 0.06 141.2)
-
Step 400
400
#80B077
oklch(70.8% 0.096 140.6)
-
Step 500
500
#5E9B54
oklch(63% 0.12 140.9)
-
Step 600
600 (this color)
#428537
oklch(55.4% 0.132 140.9)
-
Step 700
700
#34712A
oklch(49.1% 0.122 140.9)
-
Step 800
800
#2C5C24
oklch(42.7% 0.101 140.9)
-
Step 900
900
#284C22
oklch(37.8% 0.08 140.9)
-
Step 950
950
#182C15
oklch(26.9% 0.049 141.2)
#428537 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) | #887A2F | 0.091 |
| Deuteranopia (no green cones) | #7F743D | 0.092 |
| Tritanopia (no blue cones) | #3B8174 | 0.087 |
| Achromatopsia (no color) | #767676 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428537
#428537
oklch(55.4% 0.132 140.9)
- #9556A1
#9556A1
oklch(55.4% 0.132 321)
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 #428537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.034
- Jungle Green #048243 ΔE 0.036
- Sea Green #2E8B57 ΔE 0.036
- Dark Grass Green #388004 ΔE 0.037
- Forest Green #228B22 ΔE 0.038
- Tree Green #2A7E19 ΔE 0.040
- Sap Green #5C8B15 ΔE 0.041
- Mossy Green #638B27 ΔE 0.043
Use #428537 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.