#17224F
Closest named color: Oxford Blue (#1B263B). oklch(27.1% 0.084 269.7), rgb(23, 34, 79).
Aa
White text reads best on this color (15.23:1).
About this color
#17224F is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.084 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.042 away. White text reads best on it, at 15.23:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.37:1 |
| White text | 15.23:1 |
Values
| HEX | #17224F |
| RGB | rgb(23, 34, 79) |
| HSL | hsl(228, 55%, 20%) |
| OKLCH | oklch(27.1% 0.084 269.7) |
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 #17224F | 15.23:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #17224F | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #17224F text on white | 15.23:1 | AAA | Lc 101.9 | Preferred for body text |
| #17224F text on black | 1.37:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7B9AFF
oklch(70.8% 0.152 269.4)
-
Step 500
500
#5C7CFF
oklch(63.1% 0.197 269.6)
-
Step 600
600
#445FF2
oklch(55.6% 0.221 269.6)
-
Step 700
700
#374DD2
oklch(49.1% 0.205 269.7)
-
Step 800
800
#2D40AA
oklch(42.6% 0.17 269.7)
-
Step 900
900
#273887
oklch(37.7% 0.133 269.7)
-
Step 950
950 (this color)
#17224F
oklch(27.1% 0.084 269.7)
#17224F 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) | #072851 | 0.022 |
| Deuteranopia (no green cones) | #00234E | 0.023 |
| Tritanopia (no blue cones) | #002D34 | 0.072 |
| Achromatopsia (no color) | #252525 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17224F
#17224F
oklch(27.1% 0.084 269.7)
- #312500
#312500
oklch(27.1% 0.055 90.3)
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 #17224F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.042
- Marine #042E60 ΔE 0.045
- Dark Indigo #1F0954 ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.058
- Dark #1B2431 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.061
- Midnight Blue #191970 ΔE 0.063
- Navy Blue #001146 ΔE 0.064
Use #17224F 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.