#172848
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.063 262), rgb(23, 40, 72).
Aa
White text reads best on this color (14.64:1).
About this color
#172848 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.063 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.024 away. White text reads best on it, at 14.64:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.43:1 |
| White text | 14.64:1 |
Values
| HEX | #172848 |
| RGB | rgb(23, 40, 72) |
| HSL | hsl(219, 52%, 19%) |
| OKLCH | oklch(28% 0.063 262) |
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 #172848 | 14.64:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #172848 | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #172848 text on white | 14.64:1 | AAA | Lc 101.3 | Preferred for body text |
| #172848 text on black | 1.43:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A6C1F2
oklch(80.8% 0.076 262.2)
-
Step 400
400
#77A0EC
oklch(70.8% 0.121 262.1)
-
Step 500
500
#5486E5
oklch(63.1% 0.153 262)
-
Step 600
600
#396ED3
oklch(55.7% 0.166 261.8)
-
Step 700
700
#2C5BB7
oklch(49.1% 0.155 262)
-
Step 800
800
#254B94
oklch(42.7% 0.128 261.9)
-
Step 900
900
#223F76
oklch(37.6% 0.1 261.9)
-
Step 950
950 (this color)
#172848
oklch(28% 0.063 262)
#172848 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) | #1A2B49 | 0.011 |
| Deuteranopia (no green cones) | #132647 | 0.009 |
| Tritanopia (no blue cones) | #002F34 | 0.054 |
| Achromatopsia (no color) | #282828 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172848
#172848
oklch(28% 0.063 262)
- #372600
#372600
oklch(28.2% 0.058 82.9)
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 #172848, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.024
- Space Cadet #2B2D42 ΔE 0.039
- Dark #1B2431 ΔE 0.042
- Marine #042E60 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.048
- Gunmetal #293241 ΔE 0.049
- Jet #212529 ΔE 0.057
- Midnight Green #073B4C ΔE 0.062
Use #172848 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.