#558B51
Closest named color: Light Forest Green (#4F9153). oklch(58.4% 0.104 142.6), rgb(85, 139, 81).
Aa
Black text reads best on this color (5.19:1).
About this color
#558B51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.104 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.018 away. Black text reads best on it, at 5.19:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.19:1 |
| White text | 4.03:1 |
Values
| HEX | #558B51 |
| RGB | rgb(85, 139, 81) |
| HSL | hsl(116, 26%, 43%) |
| OKLCH | oklch(58.4% 0.104 142.6) |
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 #558B51 | 4.03:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #558B51 | 5.19:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #558B51 text on white | 4.03:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #558B51 text on black | 5.19:1 | 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
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E5ECE4
oklch(93.6% 0.013 141.8)
-
Step 200
200
#D0DECE
oklch(88.6% 0.026 141.8)
-
Step 300
300
#B0C9AD
oklch(80.9% 0.047 142.2)
-
Step 400
400
#86AD82
oklch(70.7% 0.075 142.4)
-
Step 500
500
#679862
oklch(63% 0.095 142.2)
-
Step 600
600 (this color)
#558B51
oklch(58.4% 0.104 142.6)
-
Step 700
700
#3E6E3A
oklch(49% 0.096 142.3)
-
Step 800
800
#335A30
oklch(42.7% 0.081 142.5)
-
Step 900
900
#2D4A2B
oklch(37.7% 0.062 142.8)
-
Step 950
950
#1B2B19
oklch(26.9% 0.039 141.8)
#558B51 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) | #8E824D | 0.077 |
| Deuteranopia (no green cones) | #867C54 | 0.077 |
| Tritanopia (no blue cones) | #50887D | 0.066 |
| Achromatopsia (no color) | #7E7E7E | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558B51
#558B51
oklch(58.4% 0.104 142.6)
- #99669F
#99669F
oklch(58.5% 0.103 323.1)
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 #558B51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.018
- Fern Green #548D44 ΔE 0.019
- Dark Sage #598556 ΔE 0.022
- Moss Green #658B38 ΔE 0.030
- Sea Green #2E8B57 ΔE 0.032
- Swamp #698339 ΔE 0.033
- Khaki Green #728639 ΔE 0.038
- Viridian #1E9167 ΔE 0.041
Use #558B51 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.