#4A278A
Closest named color: Dark Slate Blue (#483D8B). oklch(37.9% 0.154 293.9), rgb(74, 39, 138).
Aa
White text reads best on this color (10.77:1).
About this color
#4A278A is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.154 and its hue 294°. 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 10.77:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #4A278A |
| RGB | rgb(74, 39, 138) |
| HSL | hsl(261, 56%, 35%) |
| OKLCH | oklch(37.9% 0.154 293.9) |
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 #4A278A | 10.77:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #4A278A | 1.94:1 | Fails | Lc 9.6 | Not readable |
| #4A278A text on white | 10.77:1 | AAA | Lc 94.3 | Preferred for body text |
| #4A278A text on black | 1.94:1 | Fails | Lc -8.2 | 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
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#EAE6FF
oklch(93.6% 0.034 293.1)
-
Step 200
200
#DBD2FF
oklch(88.5% 0.062 294.3)
-
Step 300
300
#C4B3FF
oklch(80.8% 0.107 294.1)
-
Step 400
400
#A888FF
oklch(70.7% 0.17 294)
-
Step 500
500
#9563FF
oklch(63.2% 0.221 293.9)
-
Step 600
600
#8339F7
oklch(55.6% 0.258 293.9)
-
Step 700
700
#6F28D7
oklch(49.1% 0.239 293.7)
-
Step 800
800
#5A25AE
oklch(42.7% 0.199 293.7)
-
Step 900
900 (this color)
#4A278A
oklch(37.9% 0.154 293.9)
-
Step 950
950
#2B1850
oklch(27% 0.098 294.6)
#4A278A 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) | #003F8D | 0.093 |
| Deuteranopia (no green cones) | #003C88 | 0.092 |
| Tritanopia (no blue cones) | #384055 | 0.122 |
| Achromatopsia (no color) | #3E3E3E | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A278A
#4A278A
oklch(37.9% 0.154 293.9)
- #424700
#424700
oklch(38% 0.086 114.3)
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 #4A278A, 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 0.052
- Imperial Purple #480CA8 ΔE 0.058
- Blueberry #464196 ΔE 0.061
- Chrysanthemum #560BAD ΔE 0.065
- Rebecca Purple #663399 ΔE 0.066
- Royal Purple #4B006E ΔE 0.074
- Indigo Blue #3A18B1 ΔE 0.076
Use #4A278A 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.