#6431A1
Closest named color: Rebecca Purple (#663399). oklch(44.1% 0.172 300.3), rgb(100, 49, 161).
Aa
White text reads best on this color (8.41:1).
About this color
#6431A1 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.172 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.015 away. White text reads best on it, at 8.41:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.49:1 |
| White text | 8.41:1 |
Values
| HEX | #6431A1 |
| RGB | rgb(100, 49, 161) |
| HSL | hsl(267, 53%, 41%) |
| OKLCH | oklch(44.1% 0.172 300.3) |
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 #6431A1 | 8.41:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #6431A1 | 2.49:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #6431A1 text on white | 8.41:1 | AAA | Lc 88.4 | Fine for body text |
| #6431A1 text on black | 2.49:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#DED1F9
oklch(88.4% 0.056 300.1)
-
Step 300
300
#CBB2F8
oklch(80.9% 0.1 300.6)
-
Step 400
400
#B186F5
oklch(70.7% 0.162 300.2)
-
Step 500
500
#9F63F0
oklch(63.1% 0.205 300.2)
-
Step 600
600
#8B43DF
oklch(55.6% 0.224 300.2)
-
Step 700
700
#7633C1
oklch(49% 0.207 300.2)
-
Step 800
800 (this color)
#6431A1
oklch(44.1% 0.172 300.3)
-
Step 900
900
#4E2A7C
oklch(37.7% 0.133 300.2)
-
Step 950
950
#2E1A49
oklch(27.1% 0.085 300.5)
#6431A1 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) | #004DA4 | 0.121 |
| Deuteranopia (no green cones) | #004D9F | 0.122 |
| Tritanopia (no blue cones) | #564B65 | 0.128 |
| Achromatopsia (no color) | #4D4D4D | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6431A1
#6431A1
oklch(44.1% 0.172 300.3)
- #4C5B00
#4C5B00
oklch(44.3% 0.105 120.1)
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 #6431A1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.015
- Grape #7209B7 ΔE 0.058
- Chrysanthemum #560BAD ΔE 0.062
- Blueberry #464196 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.065
- Bluey Purple #6241C7 ΔE 0.068
- Blue With A Hint Of Purple #533CC6 ΔE 0.070
- Blurple #5539CC ΔE 0.077
Use #6431A1 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.