#4B2583
Closest named color: Indigo (#4B0082). oklch(37.2% 0.149 297.1), rgb(75, 37, 131).
Aa
White text reads best on this color (11.10:1).
About this color
#4B2583 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.149 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.047 away. White text reads best on it, at 11.10:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.89:1 |
| White text | 11.10:1 |
Values
| HEX | #4B2583 |
| RGB | rgb(75, 37, 131) |
| HSL | hsl(264, 56%, 33%) |
| OKLCH | oklch(37.2% 0.149 297.1) |
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 #4B2583 | 11.10:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #4B2583 | 1.89:1 | Fails | Lc 8.9 | Not readable |
| #4B2583 text on white | 11.10:1 | AAA | Lc 95.0 | Preferred for body text |
| #4B2583 text on black | 1.89:1 | 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
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#ECE6FD
oklch(93.6% 0.031 297.7)
-
Step 200
200
#DDD1FE
oklch(88.5% 0.063 297.3)
-
Step 300
300
#C8B2FF
oklch(81% 0.109 297)
-
Step 400
400
#AE85FF
oklch(70.8% 0.175 297.2)
-
Step 500
500
#9C5EFF
oklch(63.1% 0.228 297.1)
-
Step 600
600
#883BEE
oklch(55.6% 0.247 297)
-
Step 700
700
#742ACF
oklch(49.1% 0.23 297.2)
-
Step 800
800
#5E26A7
oklch(42.6% 0.19 297.2)
-
Step 900
900 (this color)
#4B2583
oklch(37.2% 0.149 297.1)
-
Step 950
950
#2C184E
oklch(26.9% 0.095 296.5)
#4B2583 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) | #003C86 | 0.097 |
| Deuteranopia (no green cones) | #003A81 | 0.096 |
| Tritanopia (no blue cones) | #3D3C51 | 0.114 |
| Achromatopsia (no color) | #3C3C3C | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B2583
#4B2583
oklch(37.2% 0.149 297.1)
- #3D4500
#3D4500
oklch(37% 0.085 117)
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 #4B2583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.055
- Royal Purple #4B006E ΔE 0.064
- Imperial Purple #480CA8 ΔE 0.067
- Blueberry #464196 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.072
- Chrysanthemum #560BAD ΔE 0.074
- Indigo Blue #3A18B1 ΔE 0.087
Use #4B2583 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.