#166173
Closest named color: Petrol (#005F6A). oklch(45.7% 0.075 218.2), rgb(22, 97, 115).
Aa
White text reads best on this color (7.01:1).
About this color
#166173 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.075 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.018 away. White text reads best on it, at 7.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #166173 |
| RGB | rgb(22, 97, 115) |
| HSL | hsl(192, 68%, 27%) |
| OKLCH | oklch(45.7% 0.075 218.2) |
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 #166173 | 7.01:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #166173 | 2.99:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #166173 text on white | 7.01:1 | AAA | Lc 84.0 | Fine for body text |
| #166173 text on black | 2.99:1 | Fails | Lc -18.0 | 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 800.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DDE4
oklch(88.4% 0.024 219.7)
-
Step 300
300
#A2C8D4
oklch(80.9% 0.044 219)
-
Step 400
400
#6CACBE
oklch(70.8% 0.071 217.6)
-
Step 500
500
#3F96AD
oklch(63% 0.089 218.1)
-
Step 600
600
#0F8099
oklch(55.5% 0.097 218.5)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800 (this color)
#166173
oklch(45.7% 0.075 218.2)
-
Step 900
900
#144956
oklch(37.7% 0.058 217.6)
-
Step 950
950
#0E2B32
oklch(27.1% 0.037 216.1)
#166173 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) | #555E74 | 0.063 |
| Deuteranopia (no green cones) | #495573 | 0.057 |
| Tritanopia (no blue cones) | #006767 | 0.033 |
| Achromatopsia (no color) | #595959 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166173
#166173
oklch(45.7% 0.075 218.2)
- #7B4838
#7B4838
oklch(45.8% 0.075 38.2)
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 #166173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.018
- Dark Aqua #05696B ΔE 0.032
- YInMn Blue #415A77 ΔE 0.043
- Dark Green Blue #1F6357 ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.049
- Deep Teal #00555A ΔE 0.053
- Denim #3B638C ΔE 0.054
- Peacock Blue #016795 ΔE 0.054
Use #166173 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.