#6B5BC5
Closest named color: Slate Blue (#6A5ACD). oklch(54.1% 0.159 286.7), rgb(107, 91, 197).
Aa
White text reads best on this color (5.34:1).
About this color
#6B5BC5 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.159 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.013 away. White text reads best on it, at 5.34:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.92:1 |
| White text | 5.34:1 |
Values
| HEX | #6B5BC5 |
| RGB | rgb(107, 91, 197) |
| HSL | hsl(249, 48%, 56%) |
| OKLCH | oklch(54.1% 0.159 286.7) |
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 #6B5BC5 | 5.34:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #6B5BC5 | 3.92:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #6B5BC5 text on white | 5.34:1 | AA | Lc 76.4 | Fine for body text |
| #6B5BC5 text on black | 3.92:1 | AA large text | Lc -25.4 | 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
#9B95E4
oklch(70.6% 0.114 286.6)
-
Step 500
500
#8579DD
oklch(63.2% 0.147 286.9)
-
Step 600
600 (this color)
#6B5BC5
oklch(54.1% 0.159 286.7)
-
Step 700
700
#5D4EAF
oklch(49% 0.149 286.6)
-
Step 800
800
#4C418E
oklch(42.8% 0.123 286.5)
-
Step 900
900
#3F3871
oklch(37.8% 0.095 286.6)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#6B5BC5 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) | #256EC9 | 0.084 |
| Deuteranopia (no green cones) | #2368C3 | 0.083 |
| Tritanopia (no blue cones) | #4E7287 | 0.134 |
| Achromatopsia (no color) | #6B6B6B | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5BC5
#6B5BC5
oklch(54.1% 0.159 286.7)
- #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 #6B5BC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.013
- Light Indigo #6D5ACF ΔE 0.016
- Iris #6258C4 ΔE 0.017
- Dark Periwinkle #665FD1 ΔE 0.021
- Warm Blue #4B57DB ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.061
- Deep Lavender #8D5EB7 ΔE 0.063
- Purpley #8756E4 ΔE 0.066
Use #6B5BC5 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.