#173672
Closest named color: Marine Blue (#01386A). oklch(34.7% 0.11 261.9), rgb(23, 54, 114).
Aa
White text reads best on this color (11.62:1).
About this color
#173672 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.110 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.021 away. White text reads best on it, at 11.62:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.80:1 |
| White text | 11.62:1 |
Values
| HEX | #173672 |
| RGB | rgb(23, 54, 114) |
| HSL | hsl(220, 66%, 27%) |
| OKLCH | oklch(34.7% 0.11 261.9) |
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 #173672 | 11.62:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #173672 | 1.80:1 | Fails | Lc 7.5 | Not readable |
| #173672 text on white | 11.62:1 | AAA | Lc 96.3 | Preferred for body text |
| #173672 text on black | 1.80:1 | 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 900.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A4C1F7
oklch(80.9% 0.083 262.6)
-
Step 400
400
#729FF3
oklch(70.6% 0.133 262.1)
-
Step 500
500
#4E85EE
oklch(63.1% 0.168 261.9)
-
Step 600
600
#326CDD
oklch(55.7% 0.184 261.9)
-
Step 700
700
#2559C0
oklch(49.1% 0.171 262.1)
-
Step 800
800
#20499B
oklch(42.6% 0.142 262.2)
-
Step 900
900 (this color)
#173672
oklch(34.7% 0.11 261.9)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#173672 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) | #113D74 | 0.020 |
| Deuteranopia (no green cones) | #003571 | 0.016 |
| Tritanopia (no blue cones) | #00444E | 0.086 |
| Achromatopsia (no color) | #393939 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #173672
#173672
oklch(34.7% 0.11 261.9)
- #4C3500
#4C3500
oklch(34.6% 0.071 81.7)
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 #173672, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.021
- Twilight Blue #0A437A ΔE 0.038
- Marine #042E60 ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.047
- Cobalt #1E488F ΔE 0.069
- Dark Blue Grey #1F3B4D ΔE 0.070
- Midnight Blue #191970 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.074
Use #173672 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.