#353178
Closest named color: Dark Slate Blue (#483D8B). oklch(36% 0.117 281.3), rgb(53, 49, 120).
Aa
White text reads best on this color (11.27:1).
About this color
#353178 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.117 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.056 away. White text reads best on it, at 11.27:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.86:1 |
| White text | 11.27:1 |
Values
| HEX | #353178 |
| RGB | rgb(53, 49, 120) |
| HSL | hsl(243, 42%, 33%) |
| OKLCH | oklch(36% 0.117 281.3) |
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 #353178 | 11.27:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #353178 | 1.86:1 | Fails | Lc 8.2 | Not readable |
| #353178 text on white | 11.27:1 | AAA | Lc 95.7 | Preferred for body text |
| #353178 text on black | 1.86:1 | 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 900.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D3D6FA
oklch(88.5% 0.05 281.6)
-
Step 300
300
#B6BAF9
oklch(80.8% 0.089 281.4)
-
Step 400
400
#9294F6
oklch(70.6% 0.142 281.2)
-
Step 500
500
#7A76F2
oklch(63.1% 0.181 281.3)
-
Step 600
600
#655BE0
oklch(55.5% 0.195 281.3)
-
Step 700
700
#544AC3
oklch(49.1% 0.182 281.1)
-
Step 800
800
#453E9E
oklch(42.8% 0.151 281.2)
-
Step 900
900 (this color)
#353178
oklch(36% 0.117 281.3)
-
Step 950
950
#212049
oklch(26.9% 0.074 281.3)
#353178 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) | #003D7A | 0.055 |
| Deuteranopia (no green cones) | #003877 | 0.053 |
| Tritanopia (no blue cones) | #17414F | 0.100 |
| Achromatopsia (no color) | #3B3B3B | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #353178
#353178
oklch(36% 0.117 281.3)
- #463E00
#463E00
oklch(36.1% 0.075 101.2)
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 #353178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.056
- Twilight Blue #0A437A ΔE 0.060
- Marine Blue #01386A ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.070
- Cobalt #1E488F ΔE 0.071
- Blueberry #464196 ΔE 0.071
- Marine #042E60 ΔE 0.073
- Midnight Blue #191970 ΔE 0.079
Use #353178 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.