#166B94
Closest named color: Peacock Blue (#016795). oklch(50% 0.1 235.9), rgb(22, 107, 148).
Aa
White text reads best on this color (5.89:1).
About this color
#166B94 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.100 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.015 away. White text reads best on it, at 5.89:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.56:1 |
| White text | 5.89:1 |
Values
| HEX | #166B94 |
| RGB | rgb(22, 107, 148) |
| HSL | hsl(200, 74%, 33%) |
| OKLCH | oklch(50% 0.1 235.9) |
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 #166B94 | 5.89:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #166B94 | 3.56:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #166B94 text on white | 5.89:1 | AA | Lc 79.1 | Fine for body text |
| #166B94 text on black | 3.56:1 | AA large text | Lc -22.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#70A8CA
oklch(70.6% 0.077 236)
-
Step 500
500
#4792BD
oklch(63% 0.099 236.4)
-
Step 600
600
#227CA9
oklch(55.6% 0.107 235.8)
-
Step 700
700 (this color)
#166B94
oklch(50% 0.1 235.9)
-
Step 800
800
#145576
oklch(42.7% 0.083 236.3)
-
Step 900
900
#19475F
oklch(37.8% 0.064 235)
-
Step 950
950
#102938
oklch(26.9% 0.042 237.4)
#166B94 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) | #576B96 | 0.059 |
| Deuteranopia (no green cones) | #465F93 | 0.048 |
| Tritanopia (no blue cones) | #007679 | 0.063 |
| Achromatopsia (no color) | #646464 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166B94
#166B94
oklch(50% 0.1 235.9)
- #8E5224
#8E5224
oklch(50% 0.1 55.2)
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 #166B94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.015
- Ocean Blue #03719C ΔE 0.019
- Sea Blue #047495 ΔE 0.027
- Denim #3B638C ΔE 0.032
- Muted Blue #3B719F ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.049
- Ocean #017B92 ΔE 0.050
Use #166B94 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.