#508F71
Closest named color: Slate Green (#658D6D). oklch(59.9% 0.081 162), rgb(80, 143, 113).
Aa
Black text reads best on this color (5.50:1).
About this color
#508F71 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.081 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.022 away. Black text reads best on it, at 5.50:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #508F71 |
| RGB | rgb(80, 143, 113) |
| HSL | hsl(151, 28%, 44%) |
| OKLCH | oklch(59.9% 0.081 162) |
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 #508F71 | 3.81:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #508F71 | 5.50:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #508F71 text on white | 3.81:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #508F71 text on black | 5.50:1 | AA | Lc -36.2 | 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 500.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E4ECE7
oklch(93.6% 0.011 158.8)
-
Step 200
200
#CDDED5
oklch(88.5% 0.022 163)
-
Step 300
300
#ABC9B9
oklch(80.9% 0.039 162.2)
-
Step 400
400
#7DAD95
oklch(70.6% 0.062 162.6)
-
Step 500
500 (this color)
#508F71
oklch(59.9% 0.081 162)
-
Step 600
600
#3D8363
oklch(55.5% 0.088 161.8)
-
Step 700
700
#2E6F52
oklch(49.1% 0.082 161.8)
-
Step 800
800
#285A43
oklch(42.6% 0.067 161.7)
-
Step 900
900
#254A39
oklch(37.6% 0.052 162.6)
-
Step 950
950
#172C21
oklch(27.1% 0.034 160.1)
#508F71 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) | #8D876F | 0.077 |
| Deuteranopia (no green cones) | #838073 | 0.075 |
| Tritanopia (no blue cones) | #3F8F87 | 0.034 |
| Achromatopsia (no color) | #838383 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508F71
#508F71
oklch(59.9% 0.081 162)
- #A16C8D
#A16C8D
oklch(59.7% 0.081 342)
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 #508F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.029
- Ocean Green #3D9973 ΔE 0.031
- Dark Sage #598556 ΔE 0.039
- Viridian #1E9167 ΔE 0.040
- Light Forest Green #4F9153 ΔE 0.044
- Green Grey #77926F ΔE 0.046
- Sea #3C9992 ΔE 0.048
Use #508F71 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.