#166696
Closest named color: Peacock Blue (#016795). oklch(48.9% 0.106 241.4), rgb(22, 102, 150).
Aa
White text reads best on this color (6.22:1).
About this color
#166696 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.106 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.007 away. White text reads best on it, at 6.22:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.37:1 |
| White text | 6.22:1 |
Values
| HEX | #166696 |
| RGB | rgb(22, 102, 150) |
| HSL | hsl(203, 74%, 34%) |
| OKLCH | oklch(48.9% 0.106 241.4) |
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 #166696 | 6.22:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #166696 | 3.37:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #166696 text on white | 6.22:1 | AA | Lc 80.6 | Fine for body text |
| #166696 text on black | 3.37:1 | AA large text | Lc -21.2 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A4C5DF
oklch(80.8% 0.051 242)
-
Step 400
400
#71A7CF
oklch(70.6% 0.082 241.4)
-
Step 500
500
#4991C3
oklch(63.2% 0.104 241.4)
-
Step 600
600
#267AAF
oklch(55.5% 0.113 241.4)
-
Step 700
700 (this color)
#166696
oklch(48.9% 0.106 241.4)
-
Step 800
800
#17547A
oklch(42.7% 0.087 241.1)
-
Step 900
900
#1B4662
oklch(37.8% 0.067 240.5)
-
Step 950
950
#11293A
oklch(27% 0.044 241.7)
#166696 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) | #4F6798 | 0.051 |
| Deuteranopia (no green cones) | #3E5C95 | 0.039 |
| Tritanopia (no blue cones) | #007277 | 0.071 |
| Achromatopsia (no color) | #616161 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166696
#166696
oklch(48.9% 0.106 241.4)
- #8A5011
#8A5011
oklch(48.9% 0.106 61.4)
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 #166696, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.007
- Denim #3B638C ΔE 0.029
- Ocean Blue #03719C ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.042
- Sea Blue #047495 ΔE 0.043
- Muted Blue #3B719F ΔE 0.046
Use #166696 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.