#175B7D
Closest named color: Light Navy Blue (#2E5A88). oklch(44.7% 0.085 235.7), rgb(23, 91, 125).
Aa
White text reads best on this color (7.42:1).
About this color
#175B7D is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.085 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.027 away. White text reads best on it, at 7.42:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.82:1 |
| White text | 7.42:1 |
Values
| HEX | #175B7D |
| RGB | rgb(23, 91, 125) |
| HSL | hsl(200, 69%, 29%) |
| OKLCH | oklch(44.7% 0.085 235.7) |
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 #175B7D | 7.42:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #175B7D | 2.82:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #175B7D text on white | 7.42:1 | AAA | Lc 85.5 | Fine for body text |
| #175B7D text on black | 2.82:1 | Fails | Lc -16.6 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A2C6DD
oklch(80.8% 0.05 236.3)
-
Step 400
400
#6EA9CC
oklch(70.8% 0.08 235.6)
-
Step 500
500
#4393BF
oklch(63.2% 0.102 235.7)
-
Step 600
600
#1A7CAB
oklch(55.5% 0.111 235.9)
-
Step 700
700
#076993
oklch(49.2% 0.103 235.5)
-
Step 800
800 (this color)
#175B7D
oklch(44.7% 0.085 235.7)
-
Step 900
900
#174760
oklch(37.8% 0.066 235.3)
-
Step 950
950
#0F2A38
oklch(27.1% 0.042 233.9)
#175B7D 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) | #4A5B7F | 0.050 |
| Deuteranopia (no green cones) | #3D517C | 0.042 |
| Tritanopia (no blue cones) | #006467 | 0.054 |
| Achromatopsia (no color) | #555555 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175B7D
#175B7D
oklch(44.7% 0.085 235.7)
- #784620
#784620
oklch(44.6% 0.086 55.4)
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 #175B7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.028
- YInMn Blue #415A77 ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Petrol #005F6A ΔE 0.039
- Dusk Blue #26538D ΔE 0.041
- Peacock Blue #016795 ΔE 0.047
- Denim #3B638C ΔE 0.047
Use #175B7D 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.