#166F7A
Closest named color: Deep Turquoise (#017374). oklch(49.8% 0.08 207.7), rgb(22, 111, 122).
Aa
White text reads best on this color (5.85:1).
About this color
#166F7A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.080 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.019 away. White text reads best on it, at 5.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.58:1 |
| White text | 5.85:1 |
Values
| HEX | #166F7A |
| RGB | rgb(22, 111, 122) |
| HSL | hsl(187, 69%, 28%) |
| OKLCH | oklch(49.8% 0.08 207.7) |
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 #166F7A | 5.85:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #166F7A | 3.58:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #166F7A text on white | 5.85:1 | AA | Lc 78.9 | Fine for body text |
| #166F7A text on black | 3.58:1 | AA large text | Lc -22.9 | 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
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A5C8CD
oklch(80.9% 0.038 207)
-
Step 400
400
#72ACB4
oklch(70.7% 0.061 206.8)
-
Step 500
500
#4897A2
oklch(63.1% 0.079 207.5)
-
Step 600
600
#23818D
oklch(55.6% 0.085 207.6)
-
Step 700
700 (this color)
#166F7A
oklch(49.8% 0.08 207.7)
-
Step 800
800
#155962
oklch(42.8% 0.066 208.1)
-
Step 900
900
#1A4950
oklch(37.7% 0.052 208.7)
-
Step 950
950
#112B2F
oklch(27% 0.033 208.6)
#166F7A 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) | #646A7B | 0.076 |
| Deuteranopia (no green cones) | #57617A | 0.069 |
| Tritanopia (no blue cones) | #007472 | 0.024 |
| Achromatopsia (no color) | #656565 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166F7A
#166F7A
oklch(49.8% 0.08 207.7)
- #8A5049
#8A5049
oklch(49.7% 0.079 27.6)
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 #166F7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.019
- Dark Aquamarine #017371 ΔE 0.023
- Deep Aqua #08787F ΔE 0.027
- Dark Aqua #05696B ΔE 0.029
- Bluegreen #017A79 ΔE 0.035
- Sea Blue #047495 ΔE 0.042
- Ocean #017B92 ΔE 0.045
- Teal #008080 ΔE 0.051
Use #166F7A 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.