#53278B
Closest named color: Dark Slate Blue (#483D8B). oklch(39% 0.157 299.1), rgb(83, 39, 139).
Aa
White text reads best on this color (10.34:1).
About this color
#53278B is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.157 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 10.34:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.03:1 |
| White text | 10.34:1 |
Values
| HEX | #53278B |
| RGB | rgb(83, 39, 139) |
| HSL | hsl(266, 56%, 35%) |
| OKLCH | oklch(39% 0.157 299.1) |
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 #53278B | 10.34:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #53278B | 2.03:1 | Fails | Lc 10.6 | Not readable |
| #53278B text on white | 10.34:1 | AAA | Lc 93.3 | Preferred for body text |
| #53278B text on black | 2.03:1 | Fails | Lc -9.2 | 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
#F7F3FF
oklch(97.1% 0.016 301.2)
-
Step 100
100
#EDE5FE
oklch(93.6% 0.035 300.3)
-
Step 200
200
#DFD0FF
oklch(88.5% 0.066 299.6)
-
Step 300
300
#CAB0FF
oklch(80.8% 0.113 299)
-
Step 400
400
#B183FF
oklch(70.7% 0.179 298.9)
-
Step 500
500
#A05AFF
oklch(63% 0.233 299)
-
Step 600
600
#8E31F2
oklch(55.7% 0.261 299.2)
-
Step 700
700
#791FD3
oklch(49.2% 0.243 299.1)
-
Step 800
800
#621FAA
oklch(42.7% 0.201 299.1)
-
Step 900
900 (this color)
#53278B
oklch(39% 0.157 299.1)
-
Step 950
950
#2E164F
oklch(26.9% 0.1 298.9)
#53278B 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) | #00408E | 0.106 |
| Deuteranopia (no green cones) | #003F89 | 0.107 |
| Tritanopia (no blue cones) | #463F56 | 0.117 |
| Achromatopsia (no color) | #404040 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53278B
#53278B
oklch(39% 0.157 299.1)
- #404B00
#404B00
oklch(38.9% 0.091 118.9)
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 #53278B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Rebecca Purple #663399 ΔE 0.051
- Indigo #4B0082 ΔE 0.057
- Chrysanthemum #560BAD ΔE 0.062
- Blueberry #464196 ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.063
- Royal Purple #4B006E ΔE 0.077
- Indigo Blue #3A18B1 ΔE 0.085
Use #53278B 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.