#166E94
Closest named color: Ocean Blue (#03719C). oklch(50.8% 0.098 233.1), rgb(22, 110, 148).
Aa
White text reads best on this color (5.68:1).
About this color
#166E94 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.098 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.014 away. White text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.69:1 |
| White text | 5.68:1 |
Values
| HEX | #166E94 |
| RGB | rgb(22, 110, 148) |
| HSL | hsl(198, 74%, 33%) |
| OKLCH | oklch(50.8% 0.098 233.1) |
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 #166E94 | 5.68:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #166E94 | 3.69:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #166E94 text on white | 5.68:1 | AA | Lc 78.0 | Fine for body text |
| #166E94 text on black | 3.69:1 | AA large text | Lc -23.7 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400
#6FA9C8
oklch(70.6% 0.076 232.7)
-
Step 500
500
#4593BA
oklch(63% 0.096 232.9)
-
Step 600
600
#1E7DA7
oklch(55.7% 0.105 233.1)
-
Step 700
700 (this color)
#166E94
oklch(50.8% 0.098 233.1)
-
Step 800
800
#115674
oklch(42.7% 0.081 232.8)
-
Step 900
900
#18475E
oklch(37.7% 0.064 233.4)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#166E94 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) | #5B6D96 | 0.062 |
| Deuteranopia (no green cones) | #4B6293 | 0.051 |
| Tritanopia (no blue cones) | #00787B | 0.058 |
| Achromatopsia (no color) | #676767 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166E94
#166E94
oklch(50.8% 0.098 233.1)
- #90542B
#90542B
oklch(50.7% 0.097 53)
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 #166E94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.014
- Sea Blue #047495 ΔE 0.018
- Peacock Blue #016795 ΔE 0.024
- Muted Blue #3B719F ΔE 0.033
- Denim #3B638C ΔE 0.037
- Ocean #017B92 ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.045
- Dull Blue #49759C ΔE 0.049
Use #166E94 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.