#5B8B4E
Closest named color: Fern Green (#548D44). oklch(58.7% 0.103 139.2), rgb(91, 139, 78).
Aa
Black text reads best on this color (5.24:1).
About this color
#5B8B4E is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.103 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.018 away. Black text reads best on it, at 5.24:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #5B8B4E |
| RGB | rgb(91, 139, 78) |
| HSL | hsl(107, 28%, 43%) |
| OKLCH | oklch(58.7% 0.103 139.2) |
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 #5B8B4E | 4.00:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #5B8B4E | 5.24:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #5B8B4E text on white | 4.00:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #5B8B4E text on black | 5.24:1 | AA | Lc -34.4 | 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
#F3F6F2
oklch(97% 0.006 137.8)
-
Step 100
100
#E5ECE4
oklch(93.6% 0.013 141.8)
-
Step 200
200
#D1DECD
oklch(88.6% 0.027 138.3)
-
Step 300
300
#B2C8AC
oklch(80.8% 0.045 139)
-
Step 400
400
#89AC80
oklch(70.7% 0.073 139.3)
-
Step 500
500
#6B975F
oklch(63% 0.094 139.1)
-
Step 600
600 (this color)
#5B8B4E
oklch(58.7% 0.103 139.2)
-
Step 700
700
#426E37
oklch(49.2% 0.097 139.6)
-
Step 800
800
#37592E
oklch(42.6% 0.079 139.3)
-
Step 900
900
#304A29
oklch(37.8% 0.063 139.2)
-
Step 950
950
#1C2B18
oklch(26.9% 0.04 139.2)
#5B8B4E 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) | #8E8249 | 0.071 |
| Deuteranopia (no green cones) | #877D52 | 0.071 |
| Tritanopia (no blue cones) | #58877C | 0.070 |
| Achromatopsia (no color) | #7F7F7F | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8B4E
#5B8B4E
oklch(58.7% 0.103 139.2)
- #9767A3
#9767A3
oklch(58.6% 0.104 319.4)
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 #5B8B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.018
- Light Forest Green #4F9153 ΔE 0.019
- Dark Sage #598556 ΔE 0.024
- Moss Green #658B38 ΔE 0.025
- Swamp #698339 ΔE 0.028
- Khaki Green #728639 ΔE 0.032
- Mossy Green #638B27 ΔE 0.038
- Sea Green #2E8B57 ΔE 0.039
Use #5B8B4E 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.