#175689
Closest named color: Dusk Blue (#26538D). oklch(44.1% 0.104 247.8), rgb(23, 86, 137).
Aa
White text reads best on this color (7.69:1).
About this color
#175689 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.104 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.015 away. White text reads best on it, at 7.69:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #175689 |
| RGB | rgb(23, 86, 137) |
| HSL | hsl(207, 71%, 31%) |
| OKLCH | oklch(44.1% 0.104 247.8) |
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 #175689 | 7.69:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #175689 | 2.72:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #175689 text on white | 7.69:1 | AAA | Lc 86.3 | Fine for body text |
| #175689 text on black | 2.72:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEF
oklch(88.5% 0.034 246.8)
-
Step 300
300
#A2C5E7
oklch(80.9% 0.061 247.8)
-
Step 400
400
#6EA6DB
oklch(70.7% 0.098 248)
-
Step 500
500
#448FD1
oklch(63.2% 0.125 247.8)
-
Step 600
600
#1E77BE
oklch(55.5% 0.136 248.1)
-
Step 700
700
#0E64A4
oklch(49.1% 0.126 248.1)
-
Step 800
800 (this color)
#175689
oklch(44.1% 0.104 247.8)
-
Step 900
900
#18446A
oklch(37.6% 0.081 248)
-
Step 950
950
#0F283E
oklch(26.9% 0.052 247.6)
#175689 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) | #3E598B | 0.038 |
| Deuteranopia (no green cones) | #2D4E88 | 0.026 |
| Tritanopia (no blue cones) | #006269 | 0.074 |
| Achromatopsia (no color) | #535353 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175689
#175689
oklch(44.1% 0.104 247.8)
- #754700
#754700
oklch(44.1% 0.097 68.4)
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 #175689, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.015
- Deep Sea Blue #015482 ΔE 0.016
- Light Navy #155084 ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.023
- Denim Blue #3B5B92 ΔE 0.040
- Cobalt #1E488F ΔE 0.043
- Peacock Blue #016795 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.052
Use #175689 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.