#6B5BCB
Closest named color: Slate Blue (#6A5ACD). oklch(54.5% 0.167 286), rgb(107, 91, 203).
Aa
White text reads best on this color (5.27:1).
About this color
#6B5BCB is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.167 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.004 away. White text reads best on it, at 5.27:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #6B5BCB |
| RGB | rgb(107, 91, 203) |
| HSL | hsl(249, 52%, 58%) |
| OKLCH | oklch(54.5% 0.167 286) |
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 #6B5BCB | 5.27:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #6B5BCB | 3.98:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #6B5BCB text on white | 5.27:1 | AA | Lc 75.9 | Fine for body text |
| #6B5BCB text on black | 3.98:1 | AA large text | Lc -25.8 | 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
#BCBAF0
oklch(80.9% 0.076 286.3)
-
Step 400
400
#9A95E8
oklch(70.7% 0.12 285.7)
-
Step 500
500
#8378E1
oklch(63.1% 0.154 285.9)
-
Step 600
600 (this color)
#6B5BCB
oklch(54.5% 0.167 286)
-
Step 700
700
#5C4DB3
oklch(49% 0.156 285.9)
-
Step 800
800
#4B4091
oklch(42.7% 0.129 285.8)
-
Step 900
900
#3E3774
oklch(37.7% 0.101 285.7)
-
Step 950
950
#242144
oklch(27.1% 0.064 285.2)
#6B5BCB 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) | #1A6FCF | 0.088 |
| Deuteranopia (no green cones) | #1669C9 | 0.088 |
| Tritanopia (no blue cones) | #4B748A | 0.141 |
| Achromatopsia (no color) | #6C6C6C | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5BCB
#6B5BCB
oklch(54.5% 0.167 286)
- #797300
#797300
oklch(54.3% 0.116 106)
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 #6B5BCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.004
- Light Indigo #6D5ACF ΔE 0.007
- Dark Periwinkle #665FD1 ΔE 0.014
- Iris #6258C4 ΔE 0.020
- Warm Blue #4B57DB ΔE 0.054
- Purpley #8756E4 ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.061
- Medium Slate Blue #7B68EE ΔE 0.065
Use #6B5BCB 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.