#173064
Closest named color: Marine (#042E60). oklch(32.2% 0.097 262.8), rgb(23, 48, 100).
Aa
White text reads best on this color (12.77:1).
About this color
#173064 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.097 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.019 away. White text reads best on it, at 12.77:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.64:1 |
| White text | 12.77:1 |
Values
| HEX | #173064 |
| RGB | rgb(23, 48, 100) |
| HSL | hsl(221, 63%, 24%) |
| OKLCH | oklch(32.2% 0.097 262.8) |
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 #173064 | 12.77:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #173064 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #173064 text on white | 12.77:1 | AAA | Lc 98.6 | Preferred for body text |
| #173064 text on black | 1.64:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500
#4581FF
oklch(63.1% 0.198 262.9)
-
Step 600
600
#1960FF
oklch(55.5% 0.245 262.9)
-
Step 700
700
#044BE4
oklch(49% 0.238 262.9)
-
Step 800
800
#0840B8
oklch(42.8% 0.196 262.7)
-
Step 900
900
#103891
oklch(37.6% 0.154 262.9)
-
Step 950
950 (this color)
#173064
oklch(32.2% 0.097 262.8)
#173064 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) | #133666 | 0.018 |
| Deuteranopia (no green cones) | #002F63 | 0.018 |
| Tritanopia (no blue cones) | #003C45 | 0.076 |
| Achromatopsia (no color) | #323232 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #173064
#173064
oklch(32.2% 0.097 262.8)
- #442F00
#442F00
oklch(32.1% 0.066 81.6)
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 #173064, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.019
- Marine Blue #01386A ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.060
- Midnight Blue #191970 ΔE 0.061
- Midnight Green #073B4C ΔE 0.062
- Twilight Blue #0A437A ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.064
Use #173064 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.