#174E80
Closest named color: Light Navy (#155084). oklch(41.5% 0.101 250), rgb(23, 78, 128).
Aa
White text reads best on this color (8.61:1).
About this color
#174E80 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.101 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.008 away. White text reads best on it, at 8.61:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #174E80 |
| RGB | rgb(23, 78, 128) |
| HSL | hsl(209, 70%, 30%) |
| OKLCH | oklch(41.5% 0.101 250) |
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 #174E80 | 8.61:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #174E80 | 2.43:1 | Fails | Lc 14.8 | Not readable |
| #174E80 text on white | 8.61:1 | AAA | Lc 89.2 | Fine for body text |
| #174E80 text on black | 2.43:1 | Fails | Lc -13.0 | 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
#C9DBEE
oklch(88.4% 0.033 249.6)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400
#72A5D9
oklch(70.6% 0.094 249.7)
-
Step 500
500
#4B8ECF
oklch(63.2% 0.12 249.6)
-
Step 600
600
#2B77BC
oklch(55.7% 0.13 249.7)
-
Step 700
700
#1D63A2
oklch(49% 0.122 250.1)
-
Step 800
800 (this color)
#174E80
oklch(41.5% 0.101 250)
-
Step 900
900
#1D4469
oklch(37.8% 0.077 249.6)
-
Step 950
950
#12283E
oklch(27.1% 0.05 250.2)
#174E80 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) | #365182 | 0.032 |
| Deuteranopia (no green cones) | #26477F | 0.022 |
| Tritanopia (no blue cones) | #005A61 | 0.073 |
| Achromatopsia (no color) | #4C4C4C | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174E80
#174E80
oklch(41.5% 0.101 250)
- #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 #174E80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.008
- Deep Sea Blue #015482 ΔE 0.018
- Dusk Blue #26538D ΔE 0.029
- Cobalt #1E488F ΔE 0.033
- Twilight Blue #0A437A ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.062
Use #174E80 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.