#4C2787
Closest named color: Dark Slate Blue (#483D8B). oklch(37.9% 0.151 296), rgb(76, 39, 135).
Aa
White text reads best on this color (10.78:1).
About this color
#4C2787 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.151 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 10.78:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #4C2787 |
| RGB | rgb(76, 39, 135) |
| HSL | hsl(263, 55%, 34%) |
| OKLCH | oklch(37.9% 0.151 296) |
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 #4C2787 | 10.78:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #4C2787 | 1.94:1 | Fails | Lc 9.5 | Not readable |
| #4C2787 text on white | 10.78:1 | AAA | Lc 94.4 | Preferred for body text |
| #4C2787 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
#EBE6FE
oklch(93.6% 0.033 295.3)
-
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
#9A60FF
oklch(63.2% 0.225 296.1)
-
Step 600
600
#873AF1
oklch(55.6% 0.251 296.2)
-
Step 700
700
#7329D2
oklch(49.2% 0.234 296.2)
-
Step 800
800
#5D25AA
oklch(42.7% 0.194 296.1)
-
Step 900
900 (this color)
#4C2787
oklch(37.9% 0.151 296)
-
Step 950
950
#2C184F
oklch(27% 0.096 296.1)
#4C2787 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) | #003E8A | 0.096 |
| Deuteranopia (no green cones) | #003C85 | 0.096 |
| Tritanopia (no blue cones) | #3C3F54 | 0.117 |
| Achromatopsia (no color) | #3D3D3D | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C2787
#4C2787
oklch(37.9% 0.151 296)
- #404700
#404700
oklch(37.8% 0.086 116)
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 #4C2787, 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
- Blueberry #464196 ΔE 0.063
- Imperial Purple #480CA8 ΔE 0.063
- Rebecca Purple #663399 ΔE 0.065
- Chrysanthemum #560BAD ΔE 0.069
- Royal Purple #4B006E ΔE 0.071
- Indigo Blue #3A18B1 ΔE 0.082
Use #4C2787 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.