#172644
Closest named color: Oxford Blue (#1B263B). oklch(27.2% 0.06 263), rgb(23, 38, 68).
Aa
White text reads best on this color (15.03:1).
About this color
#172644 is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.060 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.018 away. White text reads best on it, at 15.03:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.39:1 |
| White text | 15.03:1 |
Values
| HEX | #172644 |
| RGB | rgb(23, 38, 68) |
| HSL | hsl(220, 49%, 18%) |
| OKLCH | oklch(27.2% 0.06 263) |
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 #172644 | 15.03:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #172644 | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #172644 text on white | 15.03:1 | AAA | Lc 101.8 | Preferred for body text |
| #172644 text on black | 1.39:1 | 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
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF4
oklch(88.6% 0.039 262.9)
-
Step 300
300
#A9C1EF
oklch(80.9% 0.07 263.3)
-
Step 400
400
#7BA0E7
oklch(70.7% 0.112 262.8)
-
Step 500
500
#5A86E0
oklch(63.1% 0.144 263.2)
-
Step 600
600
#406ECE
oklch(55.6% 0.157 263)
-
Step 700
700
#325BB2
oklch(49% 0.146 263.1)
-
Step 800
800
#2A4B90
oklch(42.7% 0.121 263.1)
-
Step 900
900
#263F73
oklch(37.6% 0.094 263.2)
-
Step 950
950 (this color)
#172644
oklch(27.2% 0.06 263)
#172644 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) | #192945 | 0.011 |
| Deuteranopia (no green cones) | #132543 | 0.007 |
| Tritanopia (no blue cones) | #002D31 | 0.053 |
| Achromatopsia (no color) | #272727 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172644
#172644
oklch(27.2% 0.06 263)
- #342400
#342400
oklch(27.2% 0.056 83.5)
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 #172644, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.018
- Dark #1B2431 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.042
- Jet #212529 ΔE 0.052
- Gunmetal #293241 ΔE 0.052
- Marine #042E60 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.056
- Rich Black #0D1B2A ΔE 0.060
Use #172644 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.