#174A7A
Closest named color: Light Navy (#155084). oklch(40.2% 0.097 250.6), rgb(23, 74, 122).
Aa
White text reads best on this color (9.14:1).
About this color
#174A7A is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.097 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.022 away. White text reads best on it, at 9.14:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.29:1 |
| White text | 9.14:1 |
Values
| HEX | #174A7A |
| RGB | rgb(23, 74, 122) |
| HSL | hsl(209, 68%, 28%) |
| OKLCH | oklch(40.2% 0.097 250.6) |
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 #174A7A | 9.14:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #174A7A | 2.29:1 | Fails | Lc 13.3 | Not readable |
| #174A7A text on white | 9.14:1 | AAA | Lc 90.7 | Preferred for body text |
| #174A7A text on black | 2.29:1 | Fails | Lc -11.6 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9EC5EF
oklch(81% 0.073 250.6)
-
Step 400
400
#66A5E6
oklch(70.6% 0.116 250.5)
-
Step 500
500
#378DDF
oklch(63.1% 0.148 250.6)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900 (this color)
#174A7A
oklch(40.2% 0.097 250.6)
-
Step 950
950
#0B2843
oklch(27.1% 0.061 249.8)
#174A7A 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) | #334D7C | 0.030 |
| Deuteranopia (no green cones) | #244479 | 0.019 |
| Tritanopia (no blue cones) | #00555C | 0.070 |
| Achromatopsia (no color) | #484848 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174A7A
#174A7A
oklch(40.2% 0.097 250.6)
- #653E00
#653E00
oklch(40.1% 0.087 70)
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 #174A7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.022
- Twilight Blue #0A437A ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.030
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.057
- Marine Blue #01386A ΔE 0.062
Use #174A7A 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.