#558F55
Closest named color: Light Forest Green (#4F9153). oklch(59.5% 0.106 144.1), rgb(85, 143, 85).
Aa
Black text reads best on this color (5.44:1).
About this color
#558F55 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.009 away. Black text reads best on it, at 5.44:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.44:1 |
| White text | 3.85:1 |
Values
| HEX | #558F55 |
| RGB | rgb(85, 143, 85) |
| HSL | hsl(120, 25%, 45%) |
| OKLCH | oklch(59.5% 0.106 144.1) |
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 #558F55 | 3.85:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #558F55 | 5.44:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #558F55 text on white | 3.85:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #558F55 text on black | 5.44:1 | AA | Lc -35.8 | 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 500.
-
Step 50
50
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E4EDE4
oklch(93.7% 0.015 145.5)
-
Step 200
200
#CEDECD
oklch(88.4% 0.029 143.7)
-
Step 300
300
#ADCAAC
oklch(80.9% 0.052 144.2)
-
Step 400
400
#81AE80
oklch(70.6% 0.082 144.1)
-
Step 500
500 (this color)
#558F55
oklch(59.5% 0.106 144.1)
-
Step 600
600
#458446
oklch(55.5% 0.114 144.2)
-
Step 700
700
#367037
oklch(49.1% 0.107 144.1)
-
Step 800
800
#2D5B2E
oklch(42.6% 0.088 144.3)
-
Step 900
900
#294B29
oklch(37.7% 0.069 144)
-
Step 950
950
#192C18
oklch(27% 0.044 143.1)
#558F55 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) | #918551 | 0.080 |
| Deuteranopia (no green cones) | #898058 | 0.079 |
| Tritanopia (no blue cones) | #4E8C81 | 0.066 |
| Achromatopsia (no color) | #828282 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F55
#558F55
oklch(59.5% 0.106 144.1)
- #9E68A2
#9E68A2
oklch(59.5% 0.106 324.4)
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 #558F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.009
- Fern Green #548D44 ΔE 0.020
- Dark Sage #598556 ΔE 0.031
- Moss Green #658B38 ΔE 0.032
- Sea Green #2E8B57 ΔE 0.036
- Viridian #1E9167 ΔE 0.040
- Swamp #698339 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.041
Use #558F55 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.