#528D39
Closest named color: Fern Green (#548D44). oklch(58.4% 0.133 137.4), rgb(82, 141, 57).
Aa
Black text reads best on this color (5.22:1).
About this color
#528D39 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.133 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.012 away. Black text reads best on it, at 5.22:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.22:1 |
| White text | 4.01:1 |
Values
| HEX | #528D39 |
| RGB | rgb(82, 141, 57) |
| HSL | hsl(102, 42%, 39%) |
| OKLCH | oklch(58.4% 0.133 137.4) |
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 #528D39 | 4.01:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #528D39 | 5.22:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #528D39 text on white | 4.01:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #528D39 text on black | 5.22:1 | AA | Lc -34.4 | 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
#CFDFC9
oklch(88.6% 0.034 137.1)
-
Step 300
300
#AFCAA5
oklch(80.9% 0.059 137.3)
-
Step 400
400
#84AF74
oklch(70.8% 0.095 137.5)
-
Step 500
500
#649A4E
oklch(63% 0.122 137.3)
-
Step 600
600 (this color)
#528D39
oklch(58.4% 0.133 137.4)
-
Step 700
700
#3B7023
oklch(49.1% 0.123 137.4)
-
Step 800
800
#315B1F
oklch(42.6% 0.101 137.5)
-
Step 900
900
#2C4B1F
oklch(37.7% 0.079 137.3)
-
Step 950
950
#1A2C13
oklch(27% 0.05 137.5)
#528D39 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) | #918230 | 0.085 |
| Deuteranopia (no green cones) | #897D3F | 0.085 |
| Tritanopia (no blue cones) | #4F887B | 0.093 |
| Achromatopsia (no color) | #7F7F7F | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528D39
#528D39
oklch(58.4% 0.133 137.4)
- #9B60AE
#9B60AE
oklch(58.4% 0.132 317.6)
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 #528D39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.012
- Mossy Green #638B27 ΔE 0.020
- Moss Green #658B38 ΔE 0.021
- Sap Green #5C8B15 ΔE 0.024
- Light Forest Green #4F9153 ΔE 0.028
- Olive Drab #6B8E23 ΔE 0.031
- Swamp #698339 ΔE 0.038
- Khaki Green #728639 ΔE 0.042
Use #528D39 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.