#175685
Closest named color: Deep Sea Blue (#015482). oklch(43.9% 0.099 245.9), rgb(23, 86, 133).
Aa
White text reads best on this color (7.75:1).
About this color
#175685 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.099 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.013 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #175685 |
| RGB | rgb(23, 86, 133) |
| HSL | hsl(206, 71%, 31%) |
| OKLCH | oklch(43.9% 0.099 245.9) |
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 #175685 | 7.75:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #175685 | 2.70:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #175685 text on white | 7.75:1 | AAA | Lc 86.6 | Fine for body text |
| #175685 text on black | 2.70:1 | Fails | Lc -15.5 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A2C5E4
oklch(80.8% 0.058 245.3)
-
Step 400
400
#6FA6D7
oklch(70.6% 0.093 246.4)
-
Step 500
500
#458FCC
oklch(63% 0.118 246.1)
-
Step 600
600
#2078B9
oklch(55.5% 0.129 246.1)
-
Step 700
700
#0F65A0
oklch(49.1% 0.12 246)
-
Step 800
800 (this color)
#175685
oklch(43.9% 0.099 245.9)
-
Step 900
900
#184568
oklch(37.8% 0.077 245.6)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#175685 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) | #405887 | 0.040 |
| Deuteranopia (no green cones) | #304E84 | 0.028 |
| Tritanopia (no blue cones) | #006167 | 0.069 |
| Achromatopsia (no color) | #525252 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175685
#175685
oklch(43.9% 0.099 245.9)
- #764500
#764500
oklch(43.9% 0.098 65.6)
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 #175685, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.013
- Light Navy #155084 ΔE 0.018
- Dusk Blue #26538D ΔE 0.020
- Light Navy Blue #2E5A88 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.043
- Cobalt #1E488F ΔE 0.047
- YInMn Blue #415A77 ΔE 0.048
- Peacock Blue #016795 ΔE 0.052
Use #175685 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.