#175187
Closest named color: Light Navy (#155084). oklch(42.8% 0.107 250.7), rgb(23, 81, 135).
Aa
White text reads best on this color (8.19:1).
About this color
#175187 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.107 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.006 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #175187 |
| RGB | rgb(23, 81, 135) |
| HSL | hsl(209, 71%, 31%) |
| OKLCH | oklch(42.8% 0.107 250.7) |
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 #175187 | 8.19:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #175187 | 2.56:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #175187 text on white | 8.19:1 | AAA | Lc 87.9 | Fine for body text |
| #175187 text on black | 2.56:1 | Fails | Lc -14.2 | Not readable |
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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A3C4E8
oklch(80.8% 0.062 250.8)
-
Step 400
400
#70A5DD
oklch(70.7% 0.1 250.7)
-
Step 500
500
#488DD4
oklch(63.1% 0.128 251.1)
-
Step 600
600
#2676C1
oklch(55.6% 0.139 250.8)
-
Step 700
700
#1763A6
oklch(49.1% 0.128 250.4)
-
Step 800
800 (this color)
#175187
oklch(42.8% 0.107 250.7)
-
Step 900
900
#1A436C
oklch(37.6% 0.084 251.1)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#175187 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) | #375489 | 0.032 |
| Deuteranopia (no green cones) | #254A86 | 0.021 |
| Tritanopia (no blue cones) | #005E65 | 0.079 |
| Achromatopsia (no color) | #4F4F4F | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175187
#175187
oklch(42.8% 0.107 250.7)
- #6E4500
#6E4500
oklch(42.8% 0.092 71.2)
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 #175187, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.006
- Deep Sea Blue #015482 ΔE 0.016
- Dusk Blue #26538D ΔE 0.017
- Cobalt #1E488F ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.050
- YInMn Blue #415A77 ΔE 0.060
Use #175187 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.