#166B60
Closest named color: Dark Aqua (#05696B). oklch(47.7% 0.079 182), rgb(22, 107, 96).
Aa
White text reads best on this color (6.35:1).
About this color
#166B60 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.079 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.021 away. White text reads best on it, at 6.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #166B60 |
| RGB | rgb(22, 107, 96) |
| HSL | hsl(172, 66%, 25%) |
| OKLCH | oklch(47.7% 0.079 182) |
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 #166B60 | 6.35:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #166B60 | 3.30:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #166B60 text on white | 6.35:1 | AA | Lc 81.2 | Fine for body text |
| #166B60 text on black | 3.30:1 | AA large text | Lc -20.6 | 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
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C2
oklch(80.9% 0.038 181.5)
-
Step 400
400
#75ADA3
oklch(70.6% 0.061 182.1)
-
Step 500
500
#4D998D
oklch(63.1% 0.078 182.2)
-
Step 600
600
#2B8377
oklch(55.5% 0.084 182.4)
-
Step 700
700 (this color)
#166B60
oklch(47.7% 0.079 182)
-
Step 800
800
#1B5B52
oklch(42.8% 0.066 182)
-
Step 900
900
#1E4A44
oklch(37.6% 0.05 183.5)
-
Step 950
950
#132C28
oklch(27.2% 0.032 182.2)
#166B60 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) | #666460 | 0.084 |
| Deuteranopia (no green cones) | #5A5C61 | 0.079 |
| Tritanopia (no blue cones) | #006D68 | 0.013 |
| Achromatopsia (no color) | #5F5F5F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166B60
#166B60
oklch(47.7% 0.079 182)
- #814959
#814959
oklch(47.7% 0.079 2.1)
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 #166B60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.021
- Dark Green Blue #1F6357 ΔE 0.025
- Dark Aquamarine #017371 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.034
- Petrol #005F6A ΔE 0.048
- Bluegreen #017A79 ΔE 0.052
- Deep Aqua #08787F ΔE 0.054
- Spruce #0A5F38 ΔE 0.065
Use #166B60 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.