#166B7A
Closest named color: Dark Aqua (#05696B). oklch(48.7% 0.079 212.8), rgb(22, 107, 122).
Aa
White text reads best on this color (6.14:1).
About this color
#166B7A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 49%, its chroma 0.079 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.026 away. White text reads best on it, at 6.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #166B7A |
| RGB | rgb(22, 107, 122) |
| HSL | hsl(189, 69%, 28%) |
| OKLCH | oklch(48.7% 0.079 212.8) |
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 #166B7A | 6.14:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #166B7A | 3.41:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #166B7A text on white | 6.14:1 | AA | Lc 80.3 | Fine for body text |
| #166B7A text on black | 3.41:1 | AA large text | Lc -21.5 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A5C8CF
oklch(81% 0.039 211.1)
-
Step 400
400
#73ABB7
oklch(70.7% 0.061 212.6)
-
Step 500
500
#4B96A5
oklch(63.1% 0.077 212.4)
-
Step 600
600
#278091
oklch(55.6% 0.085 213.2)
-
Step 700
700 (this color)
#166B7A
oklch(48.7% 0.079 212.8)
-
Step 800
800
#185864
oklch(42.7% 0.065 212.9)
-
Step 900
900
#1C4952
oklch(37.8% 0.051 212.8)
-
Step 950
950
#122B30
oklch(27.1% 0.032 212.2)
#166B7A 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) | #60677B | 0.073 |
| Deuteranopia (no green cones) | #525D7A | 0.066 |
| Tritanopia (no blue cones) | #007170 | 0.029 |
| Achromatopsia (no color) | #626262 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166B7A
#166B7A
oklch(48.7% 0.079 212.8)
- #864E42
#864E42
oklch(48.6% 0.079 32.9)
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 #166B7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.026
- Deep Turquoise #017374 ΔE 0.030
- Dark Aquamarine #017371 ΔE 0.033
- Deep Aqua #08787F ΔE 0.039
- Petrol #005F6A ΔE 0.043
- Sea Blue #047495 ΔE 0.045
- Bluegreen #017A79 ΔE 0.048
- Peacock Blue #016795 ΔE 0.049
Use #166B7A 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.