#4F278C
Closest named color: Dark Slate Blue (#483D8B). oklch(38.7% 0.157 296.4), rgb(79, 39, 140).
Aa
White text reads best on this color (10.49:1).
About this color
#4F278C is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.157 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.050 away. White text reads best on it, at 10.49:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #4F278C |
| RGB | rgb(79, 39, 140) |
| HSL | hsl(264, 56%, 35%) |
| OKLCH | oklch(38.7% 0.157 296.4) |
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 #4F278C | 10.49:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #4F278C | 2.00:1 | Fails | Lc 10.2 | Not readable |
| #4F278C text on white | 10.49:1 | AAA | Lc 93.7 | Preferred for body text |
| #4F278C text on black | 2.00:1 | Fails | Lc -8.8 | 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
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#EBE6FF
oklch(93.6% 0.034 294.9)
-
Step 200
200
#DCD1FF
oklch(88.4% 0.064 296)
-
Step 300
300
#C7B2FF
oklch(80.9% 0.109 296.4)
-
Step 400
400
#AC86FF
oklch(70.8% 0.174 296.2)
-
Step 500
500
#9A5FFF
oklch(63.1% 0.226 296.3)
-
Step 600
600
#8833F6
oklch(55.5% 0.262 296.2)
-
Step 700
700
#7421D6
oklch(49% 0.244 296.4)
-
Step 800
800
#5E21AD
oklch(42.7% 0.201 296.3)
-
Step 900
900 (this color)
#4F278C
oklch(38.7% 0.157 296.4)
-
Step 950
950
#2C1750
oklch(26.9% 0.099 296)
#4F278C 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) | #00408F | 0.100 |
| Deuteranopia (no green cones) | #003E8A | 0.100 |
| Tritanopia (no blue cones) | #3F4056 | 0.121 |
| Achromatopsia (no color) | #3F3F3F | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F278C
#4F278C
oklch(38.7% 0.157 296.4)
- #424900
#424900
oklch(38.6% 0.088 115.8)
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 #4F278C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.050
- Indigo #4B0082 ΔE 0.055
- Rebecca Purple #663399 ΔE 0.057
- Imperial Purple #480CA8 ΔE 0.058
- Blueberry #464196 ΔE 0.060
- Chrysanthemum #560BAD ΔE 0.060
- Royal Purple #4B006E ΔE 0.077
- Indigo Blue #3A18B1 ΔE 0.078
Use #4F278C 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.