#548C66
Closest named color: Slate Green (#658D6D). oklch(59% 0.083 153.5), rgb(84, 140, 102).
Aa
Black text reads best on this color (5.32:1).
About this color
#548C66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.083 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.023 away. Black text reads best on it, at 5.32:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #548C66 |
| RGB | rgb(84, 140, 102) |
| HSL | hsl(139, 25%, 44%) |
| OKLCH | oklch(59% 0.083 153.5) |
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 #548C66 | 3.94:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #548C66 | 5.32:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #548C66 text on white | 3.94:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #548C66 text on black | 5.32:1 | AA | Lc -34.9 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E5ECE6
oklch(93.6% 0.011 149.9)
-
Step 200
200
#CFDDD3
oklch(88.4% 0.02 154.9)
-
Step 300
300
#AFC8B6
oklch(80.9% 0.037 154.2)
-
Step 400
400
#84AC8F
oklch(70.7% 0.06 153.2)
-
Step 500
500
#649774
oklch(63% 0.076 153.8)
-
Step 600
600 (this color)
#548C66
oklch(59% 0.083 153.5)
-
Step 700
700
#3B6E4C
oklch(49.2% 0.078 153.4)
-
Step 800
800
#31593E
oklch(42.6% 0.064 153.3)
-
Step 900
900
#2C4935
oklch(37.6% 0.049 153.4)
-
Step 950
950
#1A2B1F
oklch(27% 0.032 153.1)
#548C66 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) | #8C8464 | 0.074 |
| Deuteranopia (no green cones) | #837E68 | 0.071 |
| Tritanopia (no blue cones) | #498B82 | 0.043 |
| Achromatopsia (no color) | #808080 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #548C66
#548C66
oklch(59% 0.083 153.5)
- #9C6A92
#9C6A92
oklch(59% 0.084 334)
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 #548C66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.023
- Dark Sage #598556 ΔE 0.024
- Light Forest Green #4F9153 ΔE 0.035
- Ocean Green #3D9973 ΔE 0.038
- Viridian #1E9167 ΔE 0.039
- Sea Green #2E8B57 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.043
- Fern Green #548D44 ΔE 0.045
Use #548C66 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.