#175683
Closest named color: Deep Sea Blue (#015482). oklch(43.7% 0.097 244.8), rgb(23, 86, 131).
Aa
White text reads best on this color (7.79:1).
About this color
#175683 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.097 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.012 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #175683 |
| RGB | rgb(23, 86, 131) |
| HSL | hsl(205, 70%, 30%) |
| OKLCH | oklch(43.7% 0.097 244.8) |
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 #175683 | 7.79:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #175683 | 2.69:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #175683 text on white | 7.79:1 | AAA | Lc 86.7 | Fine for body text |
| #175683 text on black | 2.69:1 | Fails | Lc -15.4 | 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
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E3
oklch(80.9% 0.056 245.2)
-
Step 400
400
#6FA7D5
oklch(70.7% 0.09 244.3)
-
Step 500
500
#4590CA
oklch(63.1% 0.115 244.5)
-
Step 600
600
#2079B7
oklch(55.6% 0.125 244.7)
-
Step 700
700
#10669E
oklch(49.2% 0.117 244.6)
-
Step 800
800 (this color)
#175683
oklch(43.7% 0.097 244.8)
-
Step 900
900
#194567
oklch(37.7% 0.076 245.2)
-
Step 950
950
#10293C
oklch(27.1% 0.047 243.8)
#175683 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) | #415885 | 0.041 |
| Deuteranopia (no green cones) | #324E82 | 0.030 |
| Tritanopia (no blue cones) | #006166 | 0.068 |
| Achromatopsia (no color) | #525252 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175683
#175683
oklch(43.7% 0.097 244.8)
- #754503
#754503
oklch(43.8% 0.096 65.7)
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 #175683, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.012
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.023
- Light Navy Blue #2E5A88 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.047
- Cobalt #1E488F ΔE 0.049
- Peacock Blue #016795 ΔE 0.053
Use #175683 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.