#6431A7
Closest named color: Rebecca Purple (#663399). oklch(44.6% 0.179 298.6), rgb(100, 49, 167).
Aa
White text reads best on this color (8.27:1).
About this color
#6431A7 is a dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.179 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.024 away. White text reads best on it, at 8.27:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.53:1 |
| White text | 8.27:1 |
Values
| HEX | #6431A7 |
| RGB | rgb(100, 49, 167) |
| HSL | hsl(266, 55%, 42%) |
| OKLCH | oklch(44.6% 0.179 298.6) |
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 #6431A7 | 8.27:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #6431A7 | 2.53:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #6431A7 text on white | 8.27:1 | AAA | Lc 87.9 | Fine for body text |
| #6431A7 text on black | 2.53:1 | Fails | Lc -14.3 | 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 800.
-
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
#DED1FB
oklch(88.4% 0.059 299.3)
-
Step 300
300
#C9B2FB
oklch(80.9% 0.104 298.5)
-
Step 400
400
#AF86F9
oklch(70.7% 0.166 298.5)
-
Step 500
500
#9D61F6
oklch(63% 0.214 298.6)
-
Step 600
600
#8941E5
oklch(55.6% 0.232 298.5)
-
Step 700
700
#7531C7
oklch(49.2% 0.215 298.6)
-
Step 800
800 (this color)
#6431A7
oklch(44.6% 0.179 298.6)
-
Step 900
900
#4D2980
oklch(37.7% 0.14 298.4)
-
Step 950
950
#2D194B
oklch(27% 0.089 298.7)
#6431A7 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) | #004EAA | 0.120 |
| Deuteranopia (no green cones) | #004DA5 | 0.121 |
| Tritanopia (no blue cones) | #544E68 | 0.136 |
| Achromatopsia (no color) | #4E4E4E | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6431A7
#6431A7
oklch(44.6% 0.179 298.6)
- #4F5B00
#4F5B00
oklch(44.5% 0.104 118.2)
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 #6431A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.024
- Grape #7209B7 ΔE 0.053
- Chrysanthemum #560BAD ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.062
- Blueberry #464196 ΔE 0.066
- Blurple #5539CC ΔE 0.068
- Purple Blue #5D21D0 ΔE 0.070
Use #6431A7 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.