#588D66
Closest named color: Slate Green (#658D6D). oklch(59.5% 0.082 151.6), rgb(88, 141, 102).
Aa
Black text reads best on this color (5.41:1).
About this color
#588D66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.082 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.019 away. Black text reads best on it, at 5.41:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #588D66 |
| RGB | rgb(88, 141, 102) |
| HSL | hsl(136, 23%, 45%) |
| OKLCH | oklch(59.5% 0.082 151.6) |
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 #588D66 | 3.87:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #588D66 | 5.41:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #588D66 text on white | 3.87:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #588D66 text on black | 5.41:1 | AA | Lc -35.5 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E4ECE6
oklch(93.5% 0.012 153.7)
-
Step 200
200
#CFDED2
oklch(88.6% 0.023 151.6)
-
Step 300
300
#AEC9B4
oklch(81% 0.041 152)
-
Step 400
400
#83AD8D
oklch(70.8% 0.065 151.8)
-
Step 500
500 (this color)
#588D66
oklch(59.5% 0.082 151.6)
-
Step 600
600
#488259
oklch(55.5% 0.089 152)
-
Step 700
700
#396E48
oklch(49% 0.084 151.4)
-
Step 800
800
#305A3C
oklch(42.8% 0.069 151.8)
-
Step 900
900
#2B4A33
oklch(37.8% 0.054 151.3)
-
Step 950
950
#1A2B1E
oklch(27% 0.033 151.1)
#588D66 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) | #8D8564 | 0.071 |
| Deuteranopia (no green cones) | #857F68 | 0.070 |
| Tritanopia (no blue cones) | #4F8B82 | 0.044 |
| Achromatopsia (no color) | #818181 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #588D66
#588D66
oklch(59.5% 0.082 151.6)
- #9C6C95
#9C6C95
oklch(59.5% 0.083 331.8)
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 #588D66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.019
- Dark Sage #598556 ΔE 0.027
- Light Forest Green #4F9153 ΔE 0.034
- Ocean Green #3D9973 ΔE 0.037
- Viridian #1E9167 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.043
- Green Grey #77926F ΔE 0.044
- Fern Green #548D44 ΔE 0.045
Use #588D66 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.