#175D88
Closest named color: Light Navy Blue (#2E5A88). oklch(45.8% 0.096 241.4), rgb(23, 93, 136).
Aa
White text reads best on this color (7.10:1).
About this color
#175D88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.096 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.017 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #175D88 |
| RGB | rgb(23, 93, 136) |
| HSL | hsl(203, 71%, 31%) |
| OKLCH | oklch(45.8% 0.096 241.4) |
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 #175D88 | 7.10:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #175D88 | 2.95:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #175D88 text on white | 7.10:1 | AAA | Lc 84.2 | Fine for body text |
| #175D88 text on black | 2.95:1 | Fails | Lc -17.7 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C8DCEC
oklch(88.4% 0.031 242)
-
Step 300
300
#A1C6E2
oklch(80.9% 0.056 241)
-
Step 400
400
#6BA8D4
oklch(70.7% 0.09 241)
-
Step 500
500
#3F91C9
oklch(63.1% 0.116 241.8)
-
Step 600
600
#127AB5
oklch(55.5% 0.125 241.6)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800 (this color)
#175D88
oklch(45.8% 0.096 241.4)
-
Step 900
900
#144666
oklch(37.8% 0.075 241.4)
-
Step 950
950
#0E293B
oklch(27% 0.047 240.8)
#175D88 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) | #495E8A | 0.048 |
| Deuteranopia (no green cones) | #395487 | 0.035 |
| Tritanopia (no blue cones) | #00686C | 0.066 |
| Achromatopsia (no color) | #585858 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175D88
#175D88
oklch(45.8% 0.096 241.4)
- #7D4912
#7D4912
oklch(45.8% 0.096 61.5)
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 #175D88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.017
- Deep Sea Blue #015482 ΔE 0.031
- Peacock Blue #016795 ΔE 0.032
- Dusk Blue #26538D ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.036
- Denim #3B638C ΔE 0.037
- Light Navy #155084 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.043
Use #175D88 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.