#6B5BC4
Closest named color: Slate Blue (#6A5ACD). oklch(54% 0.158 286.9), rgb(107, 91, 196).
Aa
White text reads best on this color (5.35:1).
About this color
#6B5BC4 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.158 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.015 away. White text reads best on it, at 5.35:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.91:1 |
| White text | 5.35:1 |
Values
| HEX | #6B5BC4 |
| RGB | rgb(107, 91, 196) |
| HSL | hsl(249, 47%, 56%) |
| OKLCH | oklch(54% 0.158 286.9) |
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 #6B5BC4 | 5.35:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #6B5BC4 | 3.91:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #6B5BC4 text on white | 5.35:1 | AA | Lc 76.4 | Fine for body text |
| #6B5BC4 text on black | 3.91:1 | AA large text | Lc -25.3 | Dividers and decoration only |
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 600.
-
Step 50
50
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D7D6F3
oklch(88.6% 0.04 287.1)
-
Step 300
300
#BDBAED
oklch(80.9% 0.072 287.4)
-
Step 400
400
#9C95E4
oklch(70.7% 0.114 287.2)
-
Step 500
500
#8579DC
oklch(63.1% 0.145 287)
-
Step 600
600 (this color)
#6B5BC4
oklch(54% 0.158 286.9)
-
Step 700
700
#5E4FAE
oklch(49.2% 0.146 287)
-
Step 800
800
#4C418D
oklch(42.7% 0.121 286.7)
-
Step 900
900
#3F3871
oklch(37.8% 0.095 286.6)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#6B5BC4 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) | #266DC8 | 0.082 |
| Deuteranopia (no green cones) | #2568C2 | 0.082 |
| Tritanopia (no blue cones) | #4F7287 | 0.132 |
| Achromatopsia (no color) | #6B6B6B | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5BC4
#6B5BC4
oklch(54% 0.158 286.9)
- #777200
#777200
oklch(53.9% 0.115 106.6)
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 #6B5BC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.015
- Iris #6258C4 ΔE 0.017
- Light Indigo #6D5ACF ΔE 0.018
- Dark Periwinkle #665FD1 ΔE 0.022
- Warm Blue #4B57DB ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.062
- Deep Lavender #8D5EB7 ΔE 0.062
- Purpley #8756E4 ΔE 0.068
Use #6B5BC4 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.