#174B7B
Closest named color: Light Navy (#155084). oklch(40.5% 0.097 250.2), rgb(23, 75, 123).
Aa
White text reads best on this color (9.01:1).
About this color
#174B7B is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.097 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 9.01:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #174B7B |
| RGB | rgb(23, 75, 123) |
| HSL | hsl(209, 68%, 29%) |
| OKLCH | oklch(40.5% 0.097 250.2) |
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 #174B7B | 9.01:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #174B7B | 2.32:1 | Fails | Lc 13.6 | Not readable |
| #174B7B text on white | 9.01:1 | AAA | Lc 90.4 | Preferred for body text |
| #174B7B text on black | 2.32:1 | Fails | Lc -11.9 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
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
#A6C4E5
oklch(80.9% 0.057 251)
-
Step 400
400
#74A5D7
oklch(70.7% 0.091 249.7)
-
Step 500
500
#4E8ECD
oklch(63.2% 0.116 249.8)
-
Step 600
600
#3077BA
oklch(55.7% 0.126 250.1)
-
Step 700
700
#2263A0
oklch(49% 0.117 250.5)
-
Step 800
800 (this color)
#174B7B
oklch(40.5% 0.097 250.2)
-
Step 900
900
#1F4468
oklch(37.8% 0.075 249.9)
-
Step 950
950
#13283D
oklch(27.1% 0.048 250)
#174B7B 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) | #344E7D | 0.031 |
| Deuteranopia (no green cones) | #25457A | 0.019 |
| Tritanopia (no blue cones) | #00565D | 0.070 |
| Achromatopsia (no color) | #494949 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174B7B
#174B7B
oklch(40.5% 0.097 250.2)
- #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 #174B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Twilight Blue #0A437A ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.027
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.054
- Marine Blue #01386A ΔE 0.066
Use #174B7B 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.