#166364
Closest named color: Dark Aqua (#05696B). oklch(45.6% 0.071 196.3), rgb(22, 99, 100).
Aa
White text reads best on this color (6.99:1).
About this color
#166364 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.019 away. White text reads best on it, at 6.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #166364 |
| RGB | rgb(22, 99, 100) |
| HSL | hsl(181, 64%, 24%) |
| OKLCH | oklch(45.6% 0.071 196.3) |
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 #166364 | 6.99:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #166364 | 3.00:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #166364 text on white | 6.99:1 | AA | Lc 83.9 | Fine for body text |
| #166364 text on black | 3.00:1 | AA large text | Lc -18.1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEC
oklch(93.5% 0.012 197)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A2C9C9
oklch(80.8% 0.041 196.4)
-
Step 400
400
#6DAEAE
oklch(70.7% 0.067 195.8)
-
Step 500
500
#40999A
oklch(63% 0.084 196.3)
-
Step 600
600
#0F8485
oklch(55.7% 0.092 195.8)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800 (this color)
#166364
oklch(45.6% 0.071 196.3)
-
Step 900
900
#144B4B
oklch(37.8% 0.056 195.1)
-
Step 950
950
#0E2C2C
oklch(27.1% 0.035 195.3)
#166364 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) | #5C5E64 | 0.074 |
| Deuteranopia (no green cones) | #515664 | 0.068 |
| Tritanopia (no blue cones) | #006763 | 0.014 |
| Achromatopsia (no color) | #595959 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166364
#166364
oklch(45.6% 0.071 196.3)
- #794649
#794649
oklch(45.5% 0.07 16.4)
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 #166364, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.019
- Petrol #005F6A ΔE 0.021
- Dark Green Blue #1F6357 ΔE 0.021
- Deep Teal #00555A ΔE 0.048
- Dark Aquamarine #017371 ΔE 0.049
- Deep Turquoise #017374 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.061
- Dark Slate Gray #2F4F4F ΔE 0.063
Use #166364 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.