#66877B
Closest named color: Slate Green (#658D6D). oklch(59.5% 0.042 170.5), rgb(102, 135, 123).
Aa
Black text reads best on this color (5.31:1).
About this color
#66877B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.042 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.032 away. Black text reads best on it, at 5.31:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.31:1 |
| White text | 3.94:1 |
Values
| HEX | #66877B |
| RGB | rgb(102, 135, 123) |
| HSL | hsl(158, 14%, 46%) |
| OKLCH | oklch(59.5% 0.042 170.5) |
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 #66877B | 3.94:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #66877B | 5.31:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #66877B text on white | 3.94:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #66877B text on black | 5.31:1 | AA | Lc -34.8 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD8
oklch(88.6% 0.012 170.2)
-
Step 300
300
#B4C5BF
oklch(80.9% 0.02 172.6)
-
Step 400
400
#8DA89E
oklch(70.8% 0.033 170.9)
-
Step 500
500 (this color)
#66877B
oklch(59.5% 0.042 170.5)
-
Step 600
600
#587C6F
oklch(55.5% 0.046 170.2)
-
Step 700
700
#48695D
oklch(49.2% 0.043 169.9)
-
Step 800
800
#3C554C
oklch(42.6% 0.034 170.4)
-
Step 900
900
#33463F
oklch(37.6% 0.027 170.2)
-
Step 950
950
#1E2925
oklch(26.9% 0.017 170.8)
#66877B 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) | #85837A | 0.043 |
| Deuteranopia (no green cones) | #7F7E7C | 0.041 |
| Tritanopia (no blue cones) | #5E8883 | 0.014 |
| Achromatopsia (no color) | #808080 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66877B
#66877B
oklch(59.5% 0.042 170.5)
- #937582
#937582
oklch(59.5% 0.042 350.6)
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 #66877B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.034
- Steel Grey #6F828A ΔE 0.034
- Medium Grey #7D7F7C ΔE 0.038
- Battleship Grey #6B7C85 ΔE 0.041
- Gray #808080 ΔE 0.042
- Slate Gray #708090 ΔE 0.046
- Steel #738595 ΔE 0.047
Use #66877B 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.