#558A28
Closest named color: Sap Green (#5C8B15). oklch(57.6% 0.141 133.6), rgb(85, 138, 40).
Aa
Black text reads best on this color (5.05:1).
About this color
#558A28 is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.141 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.013 away. Black text reads best on it, at 5.05:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 5.05:1 |
| White text | 4.15:1 |
Values
| HEX | #558A28 |
| RGB | rgb(85, 138, 40) |
| HSL | hsl(92, 55%, 35%) |
| OKLCH | oklch(57.6% 0.141 133.6) |
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 #558A28 | 4.15:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #558A28 | 5.05:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #558A28 text on white | 4.15:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #558A28 text on black | 5.05:1 | AA | Lc -33.2 | 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E5EDE0
oklch(93.6% 0.019 133.1)
-
Step 200
200
#D0DFC7
oklch(88.6% 0.036 133.6)
-
Step 300
300
#B0CAA1
oklch(80.9% 0.063 134.1)
-
Step 400
400
#87AF6D
oklch(70.8% 0.101 133.8)
-
Step 500
500
#689A44
oklch(63.1% 0.129 133.9)
-
Step 600
600 (this color)
#558A28
oklch(57.6% 0.141 133.6)
-
Step 700
700
#407012
oklch(49.2% 0.131 133.7)
-
Step 800
800
#355B13
oklch(42.7% 0.108 133.6)
-
Step 900
900
#2E4B18
oklch(37.7% 0.085 133.9)
-
Step 950
950
#1B2C0F
oklch(27% 0.054 134)
#558A28 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) | #907F19 | 0.082 |
| Deuteranopia (no green cones) | #887B31 | 0.082 |
| Tritanopia (no blue cones) | #558476 | 0.104 |
| Achromatopsia (no color) | #7C7C7C | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558A28
#558A28
oklch(57.6% 0.141 133.6)
- #965DB3
#965DB3
oklch(57.6% 0.14 313.3)
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 #558A28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.013
- Mossy Green #638B27 ΔE 0.017
- Fern Green #548D44 ΔE 0.025
- Moss Green #658B38 ΔE 0.026
- Olive Drab #6B8E23 ΔE 0.030
- Swamp Green #748500 ΔE 0.038
- Swamp #698339 ΔE 0.039
- Dark Yellow Green #728F02 ΔE 0.041
Use #558A28 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.