#6F63BB
Closest named color: Slate Blue (#6A5ACD). oklch(55.2% 0.133 287.5), rgb(111, 99, 187).
Aa
White text reads best on this color (5.02:1).
About this color
#6F63BB is a medium-dark, moderately saturated purple. In OKLCH its lightness is 55%, its chroma 0.133 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.039 away. White text reads best on it, at 5.02:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 4.17:1 |
| White text | 5.02:1 |
Values
| HEX | #6F63BB |
| RGB | rgb(111, 99, 187) |
| HSL | hsl(248, 39%, 56%) |
| OKLCH | oklch(55.2% 0.133 287.5) |
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 #6F63BB | 5.02:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #6F63BB | 4.17:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #6F63BB text on white | 5.02:1 | AA | Lc 74.6 | Content text, not long reading |
| #6F63BB text on black | 4.17:1 | AA large text | Lc -27.1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BEBBE6
oklch(80.9% 0.06 288.2)
-
Step 400
400
#9D97DA
oklch(70.7% 0.097 287.7)
-
Step 500
500
#867CCF
oklch(63% 0.123 287.9)
-
Step 600
600 (this color)
#6F63BB
oklch(55.2% 0.133 287.5)
-
Step 700
700
#5E53A2
oklch(49.2% 0.123 287.4)
-
Step 800
800
#4D4484
oklch(42.8% 0.103 287.7)
-
Step 900
900
#403A69
oklch(37.8% 0.079 287.9)
-
Step 950
950
#25223E
oklch(27% 0.051 287.4)
#6F63BB 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) | #4271BE | 0.063 |
| Deuteranopia (no green cones) | #416DB9 | 0.062 |
| Tritanopia (no blue cones) | #5A7586 | 0.112 |
| Achromatopsia (no color) | #6F6F6F | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6F63BB
#6F63BB
oklch(55.2% 0.133 287.5)
- #7A7600
#7A7600
oklch(55.1% 0.118 107.4)
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 #6F63BB, closest first.
No curated palette has a color within ΔE 0.04 of #6F63BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.040
- Iris #6258C4 ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.041
- Deep Lavender #8D5EB7 ΔE 0.050
- French Blue #436BAD ΔE 0.066
- Dark Lavender #856798 ΔE 0.069
- Deep Lilac #966EBD ΔE 0.072
Use #6F63BB 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.