#172E44
Closest named color: Oxford Blue (#1B263B). oklch(29.4% 0.05 248.9), rgb(23, 46, 68).
Aa
White text reads best on this color (13.90:1).
About this color
#172E44 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.050 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.028 away. White text reads best on it, at 13.90:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.51:1 |
| White text | 13.90:1 |
Values
| HEX | #172E44 |
| RGB | rgb(23, 46, 68) |
| HSL | hsl(209, 49%, 18%) |
| OKLCH | oklch(29.4% 0.05 248.9) |
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 #172E44 | 13.90:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #172E44 | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #172E44 text on white | 13.90:1 | AAA | Lc 100.4 | Preferred for body text |
| #172E44 text on black | 1.51:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DBEE
oklch(88.4% 0.033 249.6)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400
#71A5D9
oklch(70.6% 0.095 249.3)
-
Step 500
500
#498ECF
oklch(63.1% 0.121 249.1)
-
Step 600
600
#2777BC
oklch(55.6% 0.131 248.9)
-
Step 700
700
#1964A2
oklch(49.2% 0.122 248.8)
-
Step 800
800
#185283
oklch(42.8% 0.1 248.5)
-
Step 900
900
#1B4469
oklch(37.7% 0.078 248.6)
-
Step 950
950 (this color)
#172E44
oklch(29.4% 0.05 248.9)
#172E44 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) | #252F45 | 0.020 |
| Deuteranopia (no green cones) | #1F2A44 | 0.016 |
| Tritanopia (no blue cones) | #003336 | 0.040 |
| Achromatopsia (no color) | #2C2C2C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172E44
#172E44
oklch(29.4% 0.05 248.9)
- #3C270E
#3C270E
oklch(29.3% 0.049 68.4)
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 #172E44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.028
- Gunmetal #293241 ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.039
- Dark #1B2431 ΔE 0.042
- Midnight Green #073B4C ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.046
- Jet #212529 ΔE 0.051
Use #172E44 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.