#006B66
Closest named color: Dark Aqua (#05696B). oklch(47.6% 0.082 189.2), rgb(0, 107, 102).
Aa
White text reads best on this color (6.37:1).
About this color
#006B66 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.082 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.012 away. White text reads best on it, at 6.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #006B66 |
| RGB | rgb(0, 107, 102) |
| HSL | hsl(177, 100%, 21%) |
| OKLCH | oklch(47.6% 0.082 189.2) |
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 #006B66 | 6.37:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #006B66 | 3.29:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #006B66 text on white | 6.37:1 | AA | Lc 81.1 | Fine for body text |
| #006B66 text on black | 3.29:1 | AA large text | Lc -20.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDC
oklch(88.5% 0.022 189.5)
-
Step 300
300
#A4C9C6
oklch(80.8% 0.04 190.3)
-
Step 400
400
#71AEA9
oklch(70.8% 0.064 189.3)
-
Step 500
500
#469994
oklch(63% 0.081 190)
-
Step 600
600
#1E847E
oklch(55.7% 0.089 188.9)
-
Step 700
700 (this color)
#006B66
oklch(47.6% 0.082 189.2)
-
Step 800
800
#115B57
oklch(42.8% 0.068 189.4)
-
Step 900
900
#194B47
oklch(37.8% 0.053 187.8)
-
Step 950
950
#102C2A
oklch(27.1% 0.034 189.1)
#006B66 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) | #646566 | 0.087 |
| Deuteranopia (no green cones) | #575B67 | 0.082 |
| Tritanopia (no blue cones) | #006E69 | 0.010 |
| Achromatopsia (no color) | #5F5F5F | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006B66
#006B66
oklch(47.6% 0.082 189.2)
- #844852
#844852
oklch(47.7% 0.082 10)
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 #006B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.012
- Dark Aquamarine #017371 ΔE 0.027
- Dark Green Blue #1F6357 ΔE 0.029
- Deep Turquoise #017374 ΔE 0.029
- Petrol #005F6A ΔE 0.042
- Bluegreen #017A79 ΔE 0.049
- Deep Aqua #08787F ΔE 0.050
- Slate #516572 ΔE 0.068
Use #006B66 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.