#174E81
Closest named color: Light Navy (#155084). oklch(41.6% 0.102 250.5), rgb(23, 78, 129).
Aa
White text reads best on this color (8.59:1).
About this color
#174E81 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.102 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.007 away. White text reads best on it, at 8.59:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.44:1 |
| White text | 8.59:1 |
Values
| HEX | #174E81 |
| RGB | rgb(23, 78, 129) |
| HSL | hsl(209, 70%, 30%) |
| OKLCH | oklch(41.6% 0.102 250.5) |
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 #174E81 | 8.59:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #174E81 | 2.44:1 | Fails | Lc 14.8 | Not readable |
| #174E81 text on white | 8.59:1 | AAA | Lc 89.2 | Fine for body text |
| #174E81 text on black | 2.44:1 | Fails | Lc -13.1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400
#72A5DA
oklch(70.7% 0.095 250.2)
-
Step 500
500
#4B8DD0
oklch(63% 0.122 250.7)
-
Step 600
600
#2B76BD
oklch(55.5% 0.132 250.6)
-
Step 700
700
#1D63A3
oklch(49.1% 0.123 250.5)
-
Step 800
800 (this color)
#174E81
oklch(41.6% 0.102 250.5)
-
Step 900
900
#1D446A
oklch(37.8% 0.079 250.2)
-
Step 950
950
#12283E
oklch(27.1% 0.05 250.2)
#174E81 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) | #365183 | 0.032 |
| Deuteranopia (no green cones) | #254880 | 0.019 |
| Tritanopia (no blue cones) | #005A61 | 0.075 |
| Achromatopsia (no color) | #4C4C4C | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174E81
#174E81
oklch(41.6% 0.102 250.5)
- #6A4200
#6A4200
oklch(41.6% 0.09 70.8)
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 #174E81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.007
- Deep Sea Blue #015482 ΔE 0.018
- Dusk Blue #26538D ΔE 0.028
- Cobalt #1E488F ΔE 0.031
- Twilight Blue #0A437A ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.060
- YInMn Blue #415A77 ΔE 0.063
Use #174E81 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.