#175F8C
Closest named color: Light Navy Blue (#2E5A88). oklch(46.5% 0.099 241.9), rgb(23, 95, 140).
Aa
White text reads best on this color (6.88:1).
About this color
#175F8C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.099 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.019 away. White text reads best on it, at 6.88:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.05:1 |
| White text | 6.88:1 |
Values
| HEX | #175F8C |
| RGB | rgb(23, 95, 140) |
| HSL | hsl(203, 72%, 32%) |
| OKLCH | oklch(46.5% 0.099 241.9) |
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 #175F8C | 6.88:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #175F8C | 3.05:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #175F8C text on white | 6.88:1 | AA | Lc 83.4 | Fine for body text |
| #175F8C text on black | 3.05:1 | AA large text | Lc -18.5 | 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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A6C5DE
oklch(80.9% 0.049 242.6)
-
Step 400
400
#75A7CD
oklch(70.7% 0.077 241.9)
-
Step 500
500
#4F90C0
oklch(63% 0.099 242.5)
-
Step 600
600
#2F7AAC
oklch(55.6% 0.107 241.7)
-
Step 700
700 (this color)
#175F8C
oklch(46.5% 0.099 241.9)
-
Step 800
800
#1E5478
oklch(42.8% 0.082 241.7)
-
Step 900
900
#1F4561
oklch(37.6% 0.065 243)
-
Step 950
950
#132939
oklch(27.1% 0.041 242)
#175F8C 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) | #4A608E | 0.048 |
| Deuteranopia (no green cones) | #3A558B | 0.037 |
| Tritanopia (no blue cones) | #006A6F | 0.067 |
| Achromatopsia (no color) | #5A5A5A | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175F8C
#175F8C
oklch(46.5% 0.099 241.9)
- #804B10
#804B10
oklch(46.5% 0.099 62.3)
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 #175F8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.019
- Peacock Blue #016795 ΔE 0.025
- Denim #3B638C ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.033
- Dusk Blue #26538D ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.038
- Light Navy #155084 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
Use #175F8C 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.