#174D8B
Closest named color: Light Navy (#155084). oklch(42.1% 0.117 254.8), rgb(23, 77, 139).
Aa
White text reads best on this color (8.49:1).
About this color
#174D8B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.117 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.016 away. White text reads best on it, at 8.49:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #174D8B |
| RGB | rgb(23, 77, 139) |
| HSL | hsl(212, 72%, 32%) |
| OKLCH | oklch(42.1% 0.117 254.8) |
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 #174D8B | 8.49:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #174D8B | 2.47:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #174D8B text on white | 8.49:1 | AAA | Lc 88.8 | Fine for body text |
| #174D8B text on black | 2.47:1 | Fails | Lc -13.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A3C3ED
oklch(80.8% 0.069 255.4)
-
Step 400
400
#70A3E4
oklch(70.6% 0.11 255)
-
Step 500
500
#498BDC
oklch(63.1% 0.14 254.8)
-
Step 600
600
#2973C9
oklch(55.5% 0.152 254.8)
-
Step 700
700
#1B60AE
oklch(49.1% 0.141 254.8)
-
Step 800
800 (this color)
#174D8B
oklch(42.1% 0.117 254.8)
-
Step 900
900
#1B4271
oklch(37.7% 0.092 254.8)
-
Step 950
950
#112742
oklch(27% 0.058 254.7)
#174D8B 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) | #2D528D | 0.026 |
| Deuteranopia (no green cones) | #16488A | 0.015 |
| Tritanopia (no blue cones) | #005C65 | 0.089 |
| Achromatopsia (no color) | #4D4D4D | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174D8B
#174D8B
oklch(42.1% 0.117 254.8)
- #694500
#694500
oklch(42.1% 0.089 75.2)
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 #174D8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.016
- Cobalt #1E488F ΔE 0.017
- Dusk Blue #26538D ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.029
- Twilight Blue #0A437A ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.057
- Blueberry #464196 ΔE 0.062
Use #174D8B 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.