#174B7C
Closest named color: Light Navy (#155084). oklch(40.5% 0.099 250.7), rgb(23, 75, 124).
Aa
White text reads best on this color (8.99:1).
About this color
#174B7C is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.099 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.018 away. White text reads best on it, at 8.99:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #174B7C |
| RGB | rgb(23, 75, 124) |
| HSL | hsl(209, 69%, 29%) |
| OKLCH | oklch(40.5% 0.099 250.7) |
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 #174B7C | 8.99:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #174B7C | 2.33:1 | Fails | Lc 13.7 | Not readable |
| #174B7C text on white | 8.99:1 | AAA | Lc 90.3 | Preferred for body text |
| #174B7C text on black | 2.33:1 | Fails | Lc -12.0 | 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
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A5C4E5
oklch(80.9% 0.058 250.2)
-
Step 400
400
#74A5D8
oklch(70.7% 0.092 250.2)
-
Step 500
500
#4E8DCE
oklch(63% 0.118 250.9)
-
Step 600
600
#2F76BB
oklch(55.5% 0.128 250.8)
-
Step 700
700
#2163A1
oklch(49.1% 0.119 250.6)
-
Step 800
800 (this color)
#174B7C
oklch(40.5% 0.099 250.7)
-
Step 900
900
#1F4469
oklch(37.8% 0.077 250.5)
-
Step 950
950
#13283D
oklch(27.1% 0.048 250)
#174B7C 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) | #344E7E | 0.031 |
| Deuteranopia (no green cones) | #24457B | 0.019 |
| Tritanopia (no blue cones) | #00575D | 0.074 |
| Achromatopsia (no color) | #494949 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174B7C
#174B7C
oklch(40.5% 0.099 250.7)
- #663F00
#663F00
oklch(40.4% 0.087 70.4)
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 #174B7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.018
- Twilight Blue #0A437A ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.027
- Cobalt #1E488F ΔE 0.035
- Dusk Blue #26538D ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.055
- Marine Blue #01386A ΔE 0.066
Use #174B7C 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.