#6B5ECB
Closest named color: Slate Blue (#6A5ACD). oklch(55% 0.163 285.1), rgb(107, 94, 203).
Aa
White text reads best on this color (5.13:1).
About this color
#6B5ECB is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.163 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.011 away. White text reads best on it, at 5.13:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 4.08:1 |
| White text | 5.13:1 |
Values
| HEX | #6B5ECB |
| RGB | rgb(107, 94, 203) |
| HSL | hsl(247, 51%, 58%) |
| OKLCH | oklch(55% 0.163 285.1) |
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 #6B5ECB | 5.13:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #6B5ECB | 4.08:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #6B5ECB text on white | 5.13:1 | AA | Lc 75.1 | Fine for body text |
| #6B5ECB text on black | 4.08:1 | AA large text | Lc -26.6 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F4
oklch(88.5% 0.041 285.5)
-
Step 300
300
#BBBBEF
oklch(81% 0.073 284.7)
-
Step 400
400
#9996E7
oklch(70.8% 0.117 284.7)
-
Step 500
500
#8279DF
oklch(63% 0.15 285.3)
-
Step 600
600 (this color)
#6B5ECB
oklch(55% 0.163 285.1)
-
Step 700
700
#5B4EB1
oklch(49% 0.152 285.3)
-
Step 800
800
#4A4190
oklch(42.7% 0.126 284.9)
-
Step 900
900
#3D3873
oklch(37.7% 0.098 284.5)
-
Step 950
950
#242143
oklch(27% 0.062 285.5)
#6B5ECB 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) | #2471CF | 0.082 |
| Deuteranopia (no green cones) | #206AC9 | 0.082 |
| Tritanopia (no blue cones) | #4A768B | 0.138 |
| Achromatopsia (no color) | #6E6E6E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5ECB
#6B5ECB
oklch(55% 0.163 285.1)
- #7C7500
#7C7500
oklch(55.1% 0.117 105.5)
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 #6B5ECB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.011
- Dark Periwinkle #665FD1 ΔE 0.012
- Light Indigo #6D5ACF ΔE 0.012
- Iris #6258C4 ΔE 0.023
- Warm Blue #4B57DB ΔE 0.057
- Purpley #8756E4 ΔE 0.061
- Medium Slate Blue #7B68EE ΔE 0.063
- Royal Blue #4169E1 ΔE 0.063
Use #6B5ECB 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.