#51247F
Closest named color: Indigo (#4B0082). oklch(37.4% 0.146 302.4), rgb(81, 36, 127).
Aa
White text reads best on this color (11.00:1).
About this color
#51247F is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.146 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.048 away. White text reads best on it, at 11.00:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.90:1 |
| White text | 11.00:1 |
Values
| HEX | #51247F |
| RGB | rgb(81, 36, 127) |
| HSL | hsl(270, 56%, 32%) |
| OKLCH | oklch(37.4% 0.146 302.4) |
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 #51247F | 11.00:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #51247F | 1.90:1 | Fails | Lc 9.1 | Not readable |
| #51247F text on white | 11.00:1 | AAA | Lc 94.8 | Preferred for body text |
| #51247F text on black | 1.90:1 | Fails | Lc -7.8 | 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
#F7F3FE
oklch(97% 0.015 302.6)
-
Step 100
100
#EEE5FC
oklch(93.6% 0.032 303.5)
-
Step 200
200
#E1D0FB
oklch(88.5% 0.061 303.1)
-
Step 300
300
#CEB0FC
oklch(81% 0.109 302.1)
-
Step 400
400
#B682FA
oklch(70.8% 0.175 302.1)
-
Step 500
500
#A55BF7
oklch(63.1% 0.224 302.2)
-
Step 600
600
#9237E5
oklch(55.6% 0.244 302.7)
-
Step 700
700
#7C27C7
oklch(49.1% 0.226 302.4)
-
Step 800
800
#6524A1
oklch(42.8% 0.187 302.6)
-
Step 900
900 (this color)
#51247F
oklch(37.4% 0.146 302.4)
-
Step 950
950
#30174B
oklch(27% 0.093 302.7)
#51247F 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) | #003B82 | 0.108 |
| Deuteranopia (no green cones) | #003C7D | 0.109 |
| Tritanopia (no blue cones) | #48394E | 0.108 |
| Achromatopsia (no color) | #3C3C3C | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51247F
#51247F
oklch(37.4% 0.146 302.4)
- #394800
#394800
oklch(37.5% 0.091 122.2)
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 #51247F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.060
- Royal Purple #4B006E ΔE 0.060
- Rebecca Purple #663399 ΔE 0.068
- Blueberry #464196 ΔE 0.075
- Imperial Purple #480CA8 ΔE 0.077
- Chrysanthemum #560BAD ΔE 0.079
- Grape Purple #5D1451 ΔE 0.086
Use #51247F 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.