#174C73
Closest named color: Light Navy (#155084). oklch(40.2% 0.086 244.9), rgb(23, 76, 115).
Aa
White text reads best on this color (9.06:1).
About this color
#174C73 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.086 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.029 away. White text reads best on it, at 9.06:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #174C73 |
| RGB | rgb(23, 76, 115) |
| HSL | hsl(205, 67%, 27%) |
| OKLCH | oklch(40.2% 0.086 244.9) |
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 #174C73 | 9.06:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #174C73 | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #174C73 text on white | 9.06:1 | AAA | Lc 90.5 | Preferred for body text |
| #174C73 text on black | 2.31:1 | Fails | Lc -11.8 | 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
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEB
oklch(88.6% 0.028 244.7)
-
Step 300
300
#A6C5DF
oklch(80.9% 0.05 243.7)
-
Step 400
400
#76A6CF
oklch(70.7% 0.079 245)
-
Step 500
500
#508FC3
oklch(63% 0.102 245.3)
-
Step 600
600
#3179B0
oklch(55.7% 0.111 245)
-
Step 700
700
#236597
oklch(49% 0.104 245.4)
-
Step 800
800 (this color)
#174C73
oklch(40.2% 0.086 244.9)
-
Step 900
900
#1F4563
oklch(37.8% 0.067 244.8)
-
Step 950
950
#13283A
oklch(26.9% 0.043 246.2)
#174C73 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) | #3A4D75 | 0.036 |
| Deuteranopia (no green cones) | #2D4572 | 0.027 |
| Tritanopia (no blue cones) | #00555A | 0.059 |
| Achromatopsia (no color) | #494949 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174C73
#174C73
oklch(40.2% 0.086 244.9)
- #673D08
#673D08
oklch(40.2% 0.085 65.1)
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 #174C73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.031
- Twilight Blue #0A437A ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.041
- Dusk Blue #26538D ΔE 0.049
- Cobalt #1E488F ΔE 0.051
- Charcoal #264653 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.057
Use #174C73 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.