#166C92
Closest named color: Ocean Blue (#03719C). oklch(50.1% 0.097 233.6), rgb(22, 108, 146).
Aa
White text reads best on this color (5.84:1).
About this color
#166C92 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.097 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.019 away. White text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.59:1 |
| White text | 5.84:1 |
Values
| HEX | #166C92 |
| RGB | rgb(22, 108, 146) |
| HSL | hsl(198, 74%, 33%) |
| OKLCH | oklch(50.1% 0.097 233.6) |
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 #166C92 | 5.84:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #166C92 | 3.59:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #166C92 text on white | 5.84:1 | AA | Lc 78.8 | Fine for body text |
| #166C92 text on black | 3.59:1 | AA large text | Lc -23.0 | 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 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
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DB
oklch(80.9% 0.047 235.3)
-
Step 400
400
#70A9C8
oklch(70.7% 0.075 233.1)
-
Step 500
500
#4693BA
oklch(63.1% 0.096 233.2)
-
Step 600
600
#217DA6
oklch(55.7% 0.104 232.9)
-
Step 700
700 (this color)
#166C92
oklch(50.1% 0.097 233.6)
-
Step 800
800
#135674
oklch(42.8% 0.08 233.2)
-
Step 900
900
#19475E
oklch(37.8% 0.063 233.8)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#166C92 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) | #596B94 | 0.061 |
| Deuteranopia (no green cones) | #496091 | 0.050 |
| Tritanopia (no blue cones) | #007679 | 0.058 |
| Achromatopsia (no color) | #656565 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166C92
#166C92
oklch(50.1% 0.097 233.6)
- #8E5329
#8E5329
oklch(50.2% 0.097 53.9)
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 #166C92, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.019
- Peacock Blue #016795 ΔE 0.019
- Sea Blue #047495 ΔE 0.023
- Denim #3B638C ΔE 0.033
- Muted Blue #3B719F ΔE 0.038
- Ocean #017B92 ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.052
Use #166C92 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.