#558B39
Closest named color: Fern Green (#548D44). oklch(58% 0.128 136.3), rgb(85, 139, 57).
Aa
Black text reads best on this color (5.13:1).
About this color
#558B39 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.128 and its hue 136°. 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 5.13:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.13:1 |
| White text | 4.08:1 |
Values
| HEX | #558B39 |
| RGB | rgb(85, 139, 57) |
| HSL | hsl(100, 42%, 38%) |
| OKLCH | oklch(58% 0.128 136.3) |
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 #558B39 | 4.08:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #558B39 | 5.13:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #558B39 text on white | 4.08:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #558B39 text on black | 5.13:1 | AA | Lc -33.8 | 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
#D0DECA
oklch(88.5% 0.031 136.2)
-
Step 300
300
#B0CAA5
oklch(81% 0.058 136.4)
-
Step 400
400
#86AE74
oklch(70.7% 0.092 136.3)
-
Step 500
500
#679A4F
oklch(63.2% 0.119 136.4)
-
Step 600
600 (this color)
#558B39
oklch(58% 0.128 136.3)
-
Step 700
700
#3F6F24
oklch(49% 0.118 136.1)
-
Step 800
800
#345B1F
oklch(42.8% 0.099 136.2)
-
Step 900
900
#2E4B1F
oklch(37.8% 0.078 136.1)
-
Step 950
950
#1B2C13
oklch(27.1% 0.049 136.4)
#558B39 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) | #908031 | 0.082 |
| Deuteranopia (no green cones) | #887C3F | 0.081 |
| Tritanopia (no blue cones) | #538679 | 0.091 |
| Achromatopsia (no color) | #7E7E7E | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558B39
#558B39
oklch(58% 0.128 136.3)
- #9860AD
#9860AD
oklch(58% 0.129 316.3)
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 #558B39, 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 0.018
- Mossy Green #638B27 ΔE 0.019
- Sap Green #5C8B15 ΔE 0.025
- Light Forest Green #4F9153 ΔE 0.029
- Olive Drab #6B8E23 ΔE 0.031
- Swamp #698339 ΔE 0.032
- Khaki Green #728639 ΔE 0.037
Use #558B39 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.