#558B55
Closest named color: Dark Sage (#598556). oklch(58.5% 0.099 144.2), rgb(85, 139, 85).
Aa
Black text reads best on this color (5.21:1).
About this color
#558B55 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.099 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.019 away. Black text reads best on it, at 5.21:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 5.21:1 |
| White text | 4.03:1 |
Values
| HEX | #558B55 |
| RGB | rgb(85, 139, 85) |
| HSL | hsl(120, 24%, 44%) |
| OKLCH | oklch(58.5% 0.099 144.2) |
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 #558B55 | 4.03:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #558B55 | 5.21:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #558B55 text on white | 4.03:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #558B55 text on black | 5.21:1 | AA | Lc -34.2 | 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
#F3F6F3
oklch(97% 0.005 145.5)
-
Step 100
100
#E5ECE5
oklch(93.6% 0.012 145.5)
-
Step 200
200
#D0DECF
oklch(88.6% 0.025 143.5)
-
Step 300
300
#B0C9AF
oklch(81% 0.045 144.1)
-
Step 400
400
#86AD85
oklch(70.8% 0.071 144.2)
-
Step 500
500
#669866
oklch(63.1% 0.091 144.4)
-
Step 600
600 (this color)
#558B55
oklch(58.5% 0.099 144.2)
-
Step 700
700
#3D6E3E
oklch(49% 0.092 144.4)
-
Step 800
800
#335A33
oklch(42.7% 0.077 144.1)
-
Step 900
900
#2D4A2D
oklch(37.7% 0.06 144.3)
-
Step 950
950
#1B2B1B
oklch(26.9% 0.036 144.5)
#558B55 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) | #8D8251 | 0.075 |
| Deuteranopia (no green cones) | #857D58 | 0.074 |
| Tritanopia (no blue cones) | #4F887D | 0.061 |
| Achromatopsia (no color) | #7F7F7F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558B55
#558B55
oklch(58.5% 0.099 144.2)
- #99679D
#99679D
oklch(58.6% 0.099 324.2)
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 #558B55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.019
- Light Forest Green #4F9153 ΔE 0.020
- Fern Green #548D44 ΔE 0.024
- Sea Green #2E8B57 ΔE 0.032
- Moss Green #658B38 ΔE 0.034
- Swamp #698339 ΔE 0.036
- Viridian #1E9167 ΔE 0.040
- Slate Green #658D6D ΔE 0.040
Use #558B55 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.