#4B257E
Closest named color: Indigo (#4B0082). oklch(36.7% 0.143 298.7), rgb(75, 37, 126).
Aa
White text reads best on this color (11.25:1).
About this color
#4B257E is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.143 and its hue 299°. 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 11.25:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.86:1 |
| White text | 11.25:1 |
Values
| HEX | #4B257E |
| RGB | rgb(75, 37, 126) |
| HSL | hsl(266, 55%, 32%) |
| OKLCH | oklch(36.7% 0.143 298.7) |
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 #4B257E | 11.25:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #4B257E | 1.86:1 | Fails | Lc 8.5 | Not readable |
| #4B257E text on white | 11.25:1 | AAA | Lc 95.4 | Preferred for body text |
| #4B257E text on black | 1.86:1 | Fails | Lc 0.0 | 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
#DED1FC
oklch(88.5% 0.06 299)
-
Step 300
300
#CAB1FD
oklch(80.9% 0.108 299.1)
-
Step 400
400
#B085FB
oklch(70.7% 0.171 298.8)
-
Step 500
500
#9E60F8
oklch(63.1% 0.218 298.8)
-
Step 600
600
#8A3EE7
oklch(55.5% 0.238 298.8)
-
Step 700
700
#752EC9
oklch(49.1% 0.221 298.5)
-
Step 800
800
#5F29A3
oklch(42.7% 0.183 298.4)
-
Step 900
900 (this color)
#4B257E
oklch(36.7% 0.143 298.7)
-
Step 950
950
#2D194C
oklch(27.1% 0.091 298.2)
#4B257E 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) | #003B81 | 0.098 |
| Deuteranopia (no green cones) | #003A7C | 0.098 |
| Tritanopia (no blue cones) | #3F3A4E | 0.108 |
| Achromatopsia (no color) | #3B3B3B | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B257E
#4B257E
oklch(36.7% 0.143 298.7)
- #3B4500
#3B4500
oklch(36.8% 0.086 118.6)
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 #4B257E, 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 0.058
- Royal Purple #4B006E ΔE 0.059
- Blueberry #464196 ΔE 0.074
- Imperial Purple #480CA8 ΔE 0.075
- Rebecca Purple #663399 ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.082
- Grape Purple #5D1451 ΔE 0.090
Use #4B257E 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.