#6B5BC8
Closest named color: Slate Blue (#6A5ACD). oklch(54.3% 0.163 286.3), rgb(107, 91, 200).
Aa
White text reads best on this color (5.30:1).
About this color
#6B5BC8 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.163 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.009 away. White text reads best on it, at 5.30:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #6B5BC8 |
| RGB | rgb(107, 91, 200) |
| HSL | hsl(249, 50%, 57%) |
| OKLCH | oklch(54.3% 0.163 286.3) |
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 #6B5BC8 | 5.30:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #6B5BC8 | 3.95:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #6B5BC8 text on white | 5.30:1 | AA | Lc 76.1 | Fine for body text |
| #6B5BC8 text on black | 3.95:1 | AA large text | Lc -25.6 | 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
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BCBAEF
oklch(80.9% 0.074 286.3)
-
Step 400
400
#9B95E6
oklch(70.7% 0.117 286.4)
-
Step 500
500
#8479DF
oklch(63.2% 0.15 286.2)
-
Step 600
600 (this color)
#6B5BC8
oklch(54.3% 0.163 286.3)
-
Step 700
700
#5D4EB1
oklch(49.2% 0.151 286.4)
-
Step 800
800
#4C408F
oklch(42.7% 0.126 286.8)
-
Step 900
900
#3F3772
oklch(37.6% 0.098 286.9)
-
Step 950
950
#242143
oklch(27% 0.062 285.5)
#6B5BC8 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) | #206ECC | 0.086 |
| Deuteranopia (no green cones) | #1D68C6 | 0.085 |
| Tritanopia (no blue cones) | #4D7389 | 0.136 |
| Achromatopsia (no color) | #6B6B6B | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5BC8
#6B5BC8
oklch(54.3% 0.163 286.3)
- #787300
#787300
oklch(54.2% 0.116 106.7)
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 #6B5BC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.009
- Light Indigo #6D5ACF ΔE 0.012
- Dark Periwinkle #665FD1 ΔE 0.017
- Iris #6258C4 ΔE 0.018
- Warm Blue #4B57DB ΔE 0.057
- Bluey Purple #6241C7 ΔE 0.061
- Purpley #8756E4 ΔE 0.063
- Deep Lavender #8D5EB7 ΔE 0.065
Use #6B5BC8 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.