#528E66
Closest named color: Slate Green (#658D6D). oklch(59.4% 0.088 153.7), rgb(82, 142, 102).
Aa
Black text reads best on this color (5.41:1).
About this color
#528E66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.088 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.025 away. Black text reads best on it, at 5.41:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #528E66 |
| RGB | rgb(82, 142, 102) |
| HSL | hsl(140, 27%, 44%) |
| OKLCH | oklch(59.4% 0.088 153.7) |
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 #528E66 | 3.87:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #528E66 | 5.41:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #528E66 text on white | 3.87:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #528E66 text on black | 5.41:1 | AA | Lc -35.6 | 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 500.
-
Step 50
50
#F3F7F4
oklch(97.2% 0.006 153.8)
-
Step 100
100
#E4ECE6
oklch(93.5% 0.012 153.7)
-
Step 200
200
#CEDED2
oklch(88.5% 0.024 153.4)
-
Step 300
300
#ACC9B4
oklch(80.8% 0.043 153.9)
-
Step 400
400
#7FAE8D
oklch(70.8% 0.07 153.7)
-
Step 500
500 (this color)
#528E66
oklch(59.4% 0.088 153.7)
-
Step 600
600
#418459
oklch(55.7% 0.096 153.8)
-
Step 700
700
#326F49
oklch(49% 0.088 154.1)
-
Step 800
800
#2B5B3C
oklch(42.8% 0.074 153.6)
-
Step 900
900
#274B33
oklch(37.8% 0.059 153.5)
-
Step 950
950
#182C1E
oklch(27.1% 0.037 152.9)
#528E66 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) | #8E8564 | 0.079 |
| Deuteranopia (no green cones) | #857F68 | 0.076 |
| Tritanopia (no blue cones) | #468D83 | 0.044 |
| Achromatopsia (no color) | #818181 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #528E66
#528E66
oklch(59.4% 0.088 153.7)
- #9F6A95
#9F6A95
oklch(59.4% 0.09 333.6)
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 #528E66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.025
- Dark Sage #598556 ΔE 0.028
- Light Forest Green #4F9153 ΔE 0.030
- Ocean Green #3D9973 ΔE 0.033
- Viridian #1E9167 ΔE 0.035
- Sea Green #2E8B57 ΔE 0.040
- Fern Green #548D44 ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.044
Use #528E66 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.