#4B287E
Closest named color: Dark Slate Blue (#483D8B). oklch(37.2% 0.138 298), rgb(75, 40, 126).
Aa
White text reads best on this color (11.02:1).
About this color
#4B287E is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.138 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.052 away. White text reads best on it, at 11.02:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.90:1 |
| White text | 11.02:1 |
Values
| HEX | #4B287E |
| RGB | rgb(75, 40, 126) |
| HSL | hsl(264, 52%, 33%) |
| OKLCH | oklch(37.2% 0.138 298) |
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 #4B287E | 11.02:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #4B287E | 1.90:1 | Fails | Lc 8.9 | Not readable |
| #4B287E text on white | 11.02:1 | AAA | Lc 95.0 | Preferred for body text |
| #4B287E text on black | 1.90:1 | Fails | Lc -7.6 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#ECE6FC
oklch(93.6% 0.03 298.3)
-
Step 200
200
#DDD2FB
oklch(88.6% 0.057 297.5)
-
Step 300
300
#C8B2FB
oklch(80.8% 0.104 297.9)
-
Step 400
400
#AE86F9
oklch(70.6% 0.166 298.1)
-
Step 500
500
#9C62F6
oklch(63.1% 0.212 298.1)
-
Step 600
600
#8842E5
oklch(55.6% 0.231 298)
-
Step 700
700
#7432C7
oklch(49.2% 0.214 298.1)
-
Step 800
800
#5E2BA1
oklch(42.7% 0.178 298.1)
-
Step 900
900 (this color)
#4B287E
oklch(37.2% 0.138 298)
-
Step 950
950
#2C1A4B
oklch(27% 0.087 297.1)
#4B287E 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) | #003C81 | 0.095 |
| Deuteranopia (no green cones) | #003B7C | 0.095 |
| Tritanopia (no blue cones) | #3F3C4F | 0.106 |
| Achromatopsia (no color) | #3C3C3C | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B287E
#4B287E
oklch(37.2% 0.138 298)
- #3C4600
#3C4600
oklch(37.2% 0.087 118.5)
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 #4B287E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.052
- Indigo #4B0082 ΔE 0.053
- Royal Purple #4B006E ΔE 0.065
- Blueberry #464196 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.077
- Chrysanthemum #560BAD ΔE 0.083
- Grape Purple #5D1451 ΔE 0.091
Use #4B287E 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.