#618B5E
Closest named color: Slate Green (#658D6D). oklch(59.4% 0.082 142.9), rgb(97, 139, 94).
Aa
Black text reads best on this color (5.36:1).
About this color
#618B5E is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.082 and its hue 143°. 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 5.36:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.36:1 |
| White text | 3.91:1 |
Values
| HEX | #618B5E |
| RGB | rgb(97, 139, 94) |
| HSL | hsl(116, 19%, 46%) |
| OKLCH | oklch(59.4% 0.082 142.9) |
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 #618B5E | 3.91:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #618B5E | 5.36:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #618B5E text on white | 3.91:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #618B5E text on black | 5.36:1 | AA | Lc -35.2 | 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
#F3F6F3
oklch(97% 0.005 145.5)
-
Step 100
100
#E6ECE5
oklch(93.7% 0.011 141.3)
-
Step 200
200
#D1DDD0
oklch(88.5% 0.022 143.2)
-
Step 300
300
#B2C8B0
oklch(80.9% 0.041 142.9)
-
Step 400
400
#8AAB87
oklch(70.7% 0.063 142.7)
-
Step 500
500 (this color)
#618B5E
oklch(59.4% 0.082 142.9)
-
Step 600
600
#538150
oklch(55.7% 0.09 142.9)
-
Step 700
700
#436D41
oklch(49.2% 0.083 143.2)
-
Step 800
800
#385936
oklch(42.8% 0.068 143)
-
Step 900
900
#30492F
oklch(37.7% 0.053 143.5)
-
Step 950
950
#1D2B1C
oklch(27.1% 0.033 143)
#618B5E 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) | #8D835B | 0.062 |
| Deuteranopia (no green cones) | #877F60 | 0.061 |
| Tritanopia (no blue cones) | #5D887F | 0.052 |
| Achromatopsia (no color) | #818181 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618B5E
#618B5E
oklch(59.4% 0.082 142.9)
- #966E9B
#966E9B
oklch(59.4% 0.081 322.7)
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 #618B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.022
- Dark Sage #598556 ΔE 0.022
- Light Forest Green #4F9153 ΔE 0.033
- Fern Green #548D44 ΔE 0.041
- Khaki Green #728639 ΔE 0.042
- Swamp #698339 ΔE 0.042
- Green Grey #77926F ΔE 0.042
- Moss Green #658B38 ΔE 0.045
Use #618B5E 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.