#172749
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.067 263.7), rgb(23, 39, 73).
Aa
White text reads best on this color (14.75:1).
About this color
#172749 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.067 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.026 away. White text reads best on it, at 14.75:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.42:1 |
| White text | 14.75:1 |
Values
| HEX | #172749 |
| RGB | rgb(23, 39, 73) |
| HSL | hsl(221, 52%, 19%) |
| OKLCH | oklch(27.8% 0.067 263.7) |
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 #172749 | 14.75:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #172749 | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #172749 text on white | 14.75:1 | AAA | Lc 101.5 | Preferred for body text |
| #172749 text on black | 1.42:1 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A7C1F4
oklch(80.9% 0.078 263.6)
-
Step 400
400
#789FEF
oklch(70.8% 0.125 263.7)
-
Step 500
500
#5584EA
oklch(63% 0.162 263.8)
-
Step 600
600
#3B6CD8
oklch(55.7% 0.174 263.4)
-
Step 700
700
#2E59BB
oklch(49.1% 0.162 263.7)
-
Step 800
800
#274998
oklch(42.7% 0.136 264)
-
Step 900
900
#233E79
oklch(37.7% 0.106 263.6)
-
Step 950
950 (this color)
#172749
oklch(27.8% 0.067 263.7)
#172749 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) | #182A4A | 0.010 |
| Deuteranopia (no green cones) | #112648 | 0.009 |
| Tritanopia (no blue cones) | #002F34 | 0.058 |
| Achromatopsia (no color) | #282828 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172749
#172749
oklch(27.8% 0.067 263.7)
- #362500
#362500
oklch(27.8% 0.057 82.4)
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 #172749, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.041
- Dark #1B2431 ΔE 0.044
- Marine #042E60 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.050
- Gunmetal #293241 ΔE 0.052
- Jet #212529 ΔE 0.060
- Midnight Green #073B4C ΔE 0.065
Use #172749 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.