#4A3387
Closest named color: Dark Slate Blue (#483D8B). oklch(39.5% 0.134 291.7), rgb(74, 51, 135).
Aa
White text reads best on this color (9.93:1).
About this color
#4A3387 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.134 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.025 away. White text reads best on it, at 9.93:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.93:1 |
Values
| HEX | #4A3387 |
| RGB | rgb(74, 51, 135) |
| HSL | hsl(256, 45%, 36%) |
| OKLCH | oklch(39.5% 0.134 291.7) |
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 #4A3387 | 9.93:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #4A3387 | 2.11:1 | Fails | Lc 11.3 | Not readable |
| #4A3387 text on white | 9.93:1 | AAA | Lc 92.7 | Preferred for body text |
| #4A3387 text on black | 2.11:1 | Fails | Lc -9.8 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FC
oklch(93.7% 0.028 292.4)
-
Step 200
200
#D9D3FC
oklch(88.5% 0.056 291.9)
-
Step 300
300
#C1B5FD
oklch(80.9% 0.101 291.6)
-
Step 400
400
#A38BFC
oklch(70.7% 0.162 291.5)
-
Step 500
500
#8F69F9
oklch(63.1% 0.206 291.6)
-
Step 600
600
#7B4BE8
oklch(55.6% 0.223 291.5)
-
Step 700
700
#683ACA
oklch(49.1% 0.208 291.4)
-
Step 800
800
#5532A3
oklch(42.8% 0.172 291.7)
-
Step 900
900 (this color)
#4A3387
oklch(39.5% 0.134 291.7)
-
Step 950
950
#281C4C
oklch(27% 0.085 291.2)
#4A3387 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) | #00448A | 0.083 |
| Deuteranopia (no green cones) | #004185 | 0.083 |
| Tritanopia (no blue cones) | #384658 | 0.108 |
| Achromatopsia (no color) | #434343 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A3387
#4A3387
oklch(39.5% 0.134 291.7)
- #484A00
#484A00
oklch(39.4% 0.087 111.5)
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 #4A3387, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.025
- Blueberry #464196 ΔE 0.041
- Rebecca Purple #663399 ΔE 0.060
- Cobalt #1E488F ΔE 0.073
- Indigo #4B0082 ΔE 0.077
- Imperial Purple #480CA8 ΔE 0.077
- Twilight #4E518B ΔE 0.080
- Chrysanthemum #560BAD ΔE 0.082
Use #4A3387 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.