#66815B
Closest named color: Dark Sage (#598556). oklch(57.2% 0.065 136.8), rgb(102, 129, 91).
Aa
Black text reads best on this color (4.85:1).
About this color
#66815B is a medium-dark, muted green. In OKLCH its lightness is 57%, its chroma 0.065 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.022 away. Black text reads best on it, at 4.85:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.065) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #66815B |
| RGB | rgb(102, 129, 91) |
| HSL | hsl(103, 17%, 43%) |
| OKLCH | oklch(57.2% 0.065 136.8) |
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 #66815B | 4.32:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #66815B | 4.85:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #66815B text on white | 4.32:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #66815B text on black | 4.85:1 | AA | Lc -31.7 | 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 600.
-
Step 50
50
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7EBE6
oklch(93.6% 0.008 139.4)
-
Step 200
200
#D4DCD1
oklch(88.5% 0.017 137)
-
Step 300
300
#B8C5B3
oklch(80.8% 0.029 136.9)
-
Step 400
400
#93A88B
oklch(70.7% 0.048 137.1)
-
Step 500
500
#79926F
oklch(63.1% 0.059 136.8)
-
Step 600
600 (this color)
#66815B
oklch(57.2% 0.065 136.8)
-
Step 700
700
#516947
oklch(49.2% 0.06 136.7)
-
Step 800
800
#42553A
oklch(42.6% 0.049 136.6)
-
Step 900
900
#384732
oklch(37.8% 0.04 136.9)
-
Step 950
950
#21291D
oklch(26.9% 0.024 135.3)
#66815B 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) | #847B59 | 0.044 |
| Deuteranopia (no green cones) | #7F795D | 0.042 |
| Tritanopia (no blue cones) | #657E77 | 0.045 |
| Achromatopsia (no color) | #797979 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66815B
#66815B
oklch(57.2% 0.065 136.8)
- #876C91
#876C91
oklch(57.1% 0.064 316.8)
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 #66815B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.022
- Military Green #667C3E ΔE 0.035
- Slate Green #658D6D ΔE 0.036
- Swamp #698339 ΔE 0.044
- Drab #828344 ΔE 0.047
- Khaki Green #728639 ΔE 0.049
- Muddy Green #657432 ΔE 0.054
- Grey Brown #7F7053 ΔE 0.056
Use #66815B 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.