#518F75
Closest named color: Slate Green (#658D6D). oklch(60% 0.076 165.1), rgb(81, 143, 117).
Aa
Black text reads best on this color (5.53:1).
About this color
#518F75 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.076 and its hue 165°. 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 5.53:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #518F75 |
| RGB | rgb(81, 143, 117) |
| HSL | hsl(155, 28%, 44%) |
| OKLCH | oklch(60% 0.076 165.1) |
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 #518F75 | 3.79:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #518F75 | 5.53:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #518F75 text on white | 3.79:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #518F75 text on black | 5.53:1 | AA | Lc -36.3 | 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
#F2F6F4
oklch(97% 0.005 165)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CDDED6
oklch(88.6% 0.021 166)
-
Step 300
300
#ABC9BB
oklch(81% 0.038 165.6)
-
Step 400
400
#7DAD97
oklch(70.7% 0.061 164.7)
-
Step 500
500 (this color)
#518F75
oklch(60% 0.076 165.1)
-
Step 600
600
#3E8367
oklch(55.7% 0.083 164.7)
-
Step 700
700
#2F6F56
oklch(49.2% 0.078 165.1)
-
Step 800
800
#285A46
oklch(42.7% 0.064 165)
-
Step 900
900
#264A3B
oklch(37.7% 0.05 165.1)
-
Step 950
950
#172B23
oklch(26.9% 0.03 166.8)
#518F75 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) | #8D8774 | 0.077 |
| Deuteranopia (no green cones) | #838077 | 0.074 |
| Tritanopia (no blue cones) | #3F8F88 | 0.030 |
| Achromatopsia (no color) | #838383 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518F75
#518F75
oklch(60% 0.076 165.1)
- #A26E8B
#A26E8B
oklch(60.1% 0.077 345.1)
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 #518F75, 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 0.023
- Ocean Green #3D9973 ΔE 0.034
- Sea #3C9992 ΔE 0.043
- Dark Sage #598556 ΔE 0.043
- Viridian #1E9167 ΔE 0.044
- Grey Teal #5E9B8A ΔE 0.045
- Green Grey #77926F ΔE 0.046
Use #518F75 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.