#6B4DCC
Closest named color: Slate Blue (#6A5ACD). oklch(52.2% 0.187 289.1), rgb(107, 77, 204).
Aa
White text reads best on this color (5.90:1).
About this color
#6B4DCC is a medium-dark, vivid purple. In OKLCH its lightness is 52%, its chroma 0.187 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.029 away. White text reads best on it, at 5.90:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #6B4DCC |
| RGB | rgb(107, 77, 204) |
| HSL | hsl(254, 55%, 55%) |
| OKLCH | oklch(52.2% 0.187 289.1) |
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 #6B4DCC | 5.90:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #6B4DCC | 3.55:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #6B4DCC text on white | 5.90:1 | AA | Lc 79.1 | Fine for body text |
| #6B4DCC text on black | 3.55:1 | AA large text | Lc -22.7 | 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 700.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D7D4F9
oklch(88.4% 0.051 289)
-
Step 300
300
#BEB7F8
oklch(80.8% 0.091 289.1)
-
Step 400
400
#9F8FF4
oklch(70.6% 0.145 289.4)
-
Step 500
500
#8970F0
oklch(63.1% 0.185 289)
-
Step 600
600
#7554DF
oklch(55.7% 0.202 289.1)
-
Step 700
700 (this color)
#6B4DCC
oklch(52.2% 0.187 289.1)
-
Step 800
800
#50389C
oklch(42.6% 0.155 289.2)
-
Step 900
900
#42327C
oklch(37.7% 0.12 289.3)
-
Step 950
950
#261E49
oklch(27% 0.077 288.7)
#6B4DCC 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) | #0067D0 | 0.105 |
| Deuteranopia (no green cones) | #0061C9 | 0.103 |
| Tritanopia (no blue cones) | #4B6B85 | 0.154 |
| Achromatopsia (no color) | #646464 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B4DCC
#6B4DCC
oklch(52.2% 0.187 289.1)
- #6F6E00
#6F6E00
oklch(52.2% 0.113 109.1)
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 #6B4DCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.029
- Light Indigo #6D5ACF ΔE 0.030
- Iris #6258C4 ΔE 0.030
- Bluey Purple #6241C7 ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.041
- Warm Blue #4B57DB ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Blurple #5539CC ΔE 0.058
Use #6B4DCC 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.