#538C3A
Closest named color: Fern Green (#548D44). oklch(58.2% 0.13 137.2), rgb(83, 140, 58).
Aa
Black text reads best on this color (5.18:1).
About this color
#538C3A is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.130 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 0.011 away. Black text reads best on it, at 5.18:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #538C3A |
| RGB | rgb(83, 140, 58) |
| HSL | hsl(102, 41%, 39%) |
| OKLCH | oklch(58.2% 0.13 137.2) |
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 #538C3A | 4.05:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #538C3A | 5.18:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #538C3A text on white | 4.05:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #538C3A text on black | 5.18:1 | AA | Lc -34.1 | 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
#E5EDE2
oklch(93.7% 0.017 137)
-
Step 200
200
#CFDFCA
oklch(88.6% 0.033 138.2)
-
Step 300
300
#AFCAA5
oklch(80.9% 0.059 137.3)
-
Step 400
400
#85AE74
oklch(70.6% 0.093 136.8)
-
Step 500
500
#659A4F
oklch(63.1% 0.12 137.2)
-
Step 600
600 (this color)
#538C3A
oklch(58.2% 0.13 137.2)
-
Step 700
700
#3C7024
oklch(49.1% 0.121 137.3)
-
Step 800
800
#325B20
oklch(42.7% 0.1 137.3)
-
Step 900
900
#2C4B20
oklch(37.7% 0.078 137.7)
-
Step 950
950
#1A2C13
oklch(27% 0.05 137.5)
#538C3A 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) | #908132 | 0.083 |
| Deuteranopia (no green cones) | #887C40 | 0.084 |
| Tritanopia (no blue cones) | #50877A | 0.091 |
| Achromatopsia (no color) | #7E7E7E | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538C3A
#538C3A
oklch(58.2% 0.13 137.2)
- #9A60AD
#9A60AD
oklch(58.2% 0.13 317.4)
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 #538C3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.011
- Moss Green #658B38 ΔE 0.020
- Mossy Green #638B27 ΔE 0.020
- Sap Green #5C8B15 ΔE 0.026
- Light Forest Green #4F9153 ΔE 0.027
- Olive Drab #6B8E23 ΔE 0.032
- Swamp #698339 ΔE 0.035
- Khaki Green #728639 ΔE 0.040
Use #538C3A 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.