#6658ED
Closest named color: Neon Blue (#4361EE). oklch(56.1% 0.215 281.1), rgb(102, 88, 237).
Aa
White text reads best on this color (5.01:1).
About this color
#6658ED is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.215 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.046 away. White text reads best on it, at 5.01:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #6658ED |
| RGB | rgb(102, 88, 237) |
| HSL | hsl(246, 81%, 64%) |
| OKLCH | oklch(56.1% 0.215 281.1) |
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 #6658ED | 5.01:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #6658ED | 4.18:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #6658ED text on white | 5.01:1 | AA | Lc 74.2 | Content text, not long reading |
| #6658ED text on black | 4.18:1 | AA large text | Lc -27.5 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D2D6FD
oklch(88.5% 0.054 280.6)
-
Step 300
300
#B5BAFE
oklch(80.9% 0.096 280.8)
-
Step 400
400
#9192FE
oklch(70.6% 0.156 281.2)
-
Step 500
500
#7973FC
oklch(63.1% 0.198 281.1)
-
Step 600
600 (this color)
#6658ED
oklch(56.1% 0.215 281.1)
-
Step 700
700
#5445CD
oklch(49.1% 0.201 281)
-
Step 800
800
#443AA5
oklch(42.6% 0.165 281)
-
Step 900
900
#393483
oklch(37.8% 0.128 281.2)
-
Step 950
950
#211F4D
oklch(27% 0.082 281.3)
#6658ED 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) | #0074F2 | 0.090 |
| Deuteranopia (no green cones) | #006AEA | 0.084 |
| Tritanopia (no blue cones) | #167D9B | 0.183 |
| Achromatopsia (no color) | #6F6F6F | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6658ED
#6658ED
oklch(56.1% 0.215 281.1)
- #847600
#847600
oklch(56.1% 0.117 101.1)
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 #6658ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.046
- Warm Blue #4B57DB ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.050
- Medium Slate Blue #7B68EE ΔE 0.051
- Purpley #8756E4 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.058
Use #6658ED 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.