#558F39
Closest named color: Fern Green (#548D44). oklch(59.1% 0.134 136.7), rgb(85, 143, 57).
Aa
Black text reads best on this color (5.37:1).
About this color
#558F39 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.134 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 0.015 away. Black text reads best on it, at 5.37:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #558F39 |
| RGB | rgb(85, 143, 57) |
| HSL | hsl(100, 43%, 39%) |
| OKLCH | oklch(59.1% 0.134 136.7) |
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 #558F39 | 3.90:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #558F39 | 5.37:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #558F39 text on white | 3.90:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #558F39 text on black | 5.37:1 | AA | Lc -35.3 | 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E5EDE1
oklch(93.7% 0.018 134.9)
-
Step 200
200
#CFDFC9
oklch(88.6% 0.034 137.1)
-
Step 300
300
#AFCAA4
oklch(80.9% 0.06 136.7)
-
Step 400
400
#84AF72
oklch(70.7% 0.097 136.8)
-
Step 500
500
#659A4C
oklch(63% 0.123 136.5)
-
Step 600
600 (this color)
#558F39
oklch(59.1% 0.134 136.7)
-
Step 700
700
#3C7020
oklch(49.1% 0.125 136.6)
-
Step 800
800
#325B1D
oklch(42.6% 0.102 136.6)
-
Step 900
900
#2C4B1E
oklch(37.7% 0.08 136.9)
-
Step 950
950
#1A2C12
oklch(27% 0.051 136.8)
#558F39 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) | #948430 | 0.086 |
| Deuteranopia (no green cones) | #8C7F3F | 0.086 |
| Tritanopia (no blue cones) | #538A7C | 0.094 |
| Achromatopsia (no color) | #818181 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F39
#558F39
oklch(59.1% 0.134 136.7)
- #9D62B2
#9D62B2
oklch(59.2% 0.134 316.7)
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 #558F39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.015
- Mossy Green #638B27 ΔE 0.019
- Moss Green #658B38 ΔE 0.020
- Sap Green #5C8B15 ΔE 0.024
- Olive Drab #6B8E23 ΔE 0.026
- Light Forest Green #4F9153 ΔE 0.027
- Dark Yellow Green #728F02 ΔE 0.040
- Swamp #698339 ΔE 0.041
Use #558F39 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.