#175C81
Closest named color: Light Navy Blue (#2E5A88). oklch(45.2% 0.089 237.7), rgb(23, 92, 129).
Aa
White text reads best on this color (7.28:1).
About this color
#175C81 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.089 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.022 away. White text reads best on it, at 7.28:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #175C81 |
| RGB | rgb(23, 92, 129) |
| HSL | hsl(201, 70%, 30%) |
| OKLCH | oklch(45.2% 0.089 237.7) |
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 #175C81 | 7.28:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #175C81 | 2.88:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #175C81 text on white | 7.28:1 | AAA | Lc 84.9 | Fine for body text |
| #175C81 text on black | 2.88:1 | Fails | Lc -17.1 | 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
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DCEA
oklch(88.4% 0.029 238.3)
-
Step 300
300
#A2C6DF
oklch(80.9% 0.052 238.6)
-
Step 400
400
#6DA8CF
oklch(70.6% 0.084 238.5)
-
Step 500
500
#4192C2
oklch(63% 0.107 237.9)
-
Step 600
600
#177CAE
oklch(55.7% 0.115 237.2)
-
Step 700
700
#026896
oklch(49.1% 0.108 237.7)
-
Step 800
800 (this color)
#175C81
oklch(45.2% 0.089 237.7)
-
Step 900
900
#164662
oklch(37.6% 0.07 238.5)
-
Step 950
950
#0F2939
oklch(26.9% 0.044 238.4)
#175C81 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) | #4A5C83 | 0.049 |
| Deuteranopia (no green cones) | #3C5280 | 0.041 |
| Tritanopia (no blue cones) | #006569 | 0.056 |
| Achromatopsia (no color) | #575757 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175C81
#175C81
oklch(45.2% 0.089 237.7)
- #7A481D
#7A481D
oklch(45.2% 0.089 58.1)
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 #175C81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.028
- Dusk Blue #26538D ΔE 0.038
- YInMn Blue #415A77 ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Peacock Blue #016795 ΔE 0.041
- Denim #3B638C ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.044
Use #175C81 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.