#558E4B
Closest named color: Fern Green (#548D44). oklch(59.1% 0.115 140.7), rgb(85, 142, 75).
Aa
Black text reads best on this color (5.35:1).
About this color
#558E4B is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.115 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.008 away. Black text reads best on it, at 5.35:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.35:1 |
| White text | 3.92:1 |
Values
| HEX | #558E4B |
| RGB | rgb(85, 142, 75) |
| HSL | hsl(111, 31%, 43%) |
| OKLCH | oklch(59.1% 0.115 140.7) |
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 #558E4B | 3.92:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #558E4B | 5.35:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #558E4B text on white | 3.92:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #558E4B text on black | 5.35:1 | AA | Lc -35.2 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E5ECE3
oklch(93.5% 0.014 138.7)
-
Step 200
200
#CFDECD
oklch(88.5% 0.028 142)
-
Step 300
300
#AFC9AA
oklch(80.8% 0.051 140.6)
-
Step 400
400
#84AE7D
oklch(70.7% 0.083 141)
-
Step 500
500
#65995C
oklch(63.1% 0.105 140.8)
-
Step 600
600 (this color)
#558E4B
oklch(59.1% 0.115 140.7)
-
Step 700
700
#3C6F33
oklch(49.1% 0.106 140.7)
-
Step 800
800
#325B2B
oklch(42.8% 0.088 140.8)
-
Step 900
900
#2C4B27
oklch(37.8% 0.07 141)
-
Step 950
950
#1A2C17
oklch(27.1% 0.045 140.9)
#558E4B 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) | #918446 | 0.081 |
| Deuteranopia (no green cones) | #897F4F | 0.080 |
| Tritanopia (no blue cones) | #508A7E | 0.076 |
| Achromatopsia (no color) | #818181 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558E4B
#558E4B
oklch(59.1% 0.115 140.7)
- #9C65A7
#9C65A7
oklch(59% 0.115 320.8)
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 #558E4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.008
- Light Forest Green #4F9153 ΔE 0.011
- Moss Green #658B38 ΔE 0.023
- Mossy Green #638B27 ΔE 0.033
- Dark Sage #598556 ΔE 0.035
- Swamp #698339 ΔE 0.035
- Sea Green #2E8B57 ΔE 0.037
- Khaki Green #728639 ΔE 0.037
Use #558E4B 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.