#634EFA
Closest named color: Neon Blue (#4361EE). oklch(55.5% 0.243 280.5), rgb(99, 78, 250).
Aa
White text reads best on this color (5.24:1).
About this color
#634EFA is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.243 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.054 away. White text reads best on it, at 5.24:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.243) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #634EFA |
| RGB | rgb(99, 78, 250) |
| HSL | hsl(247, 95%, 64%) |
| OKLCH | oklch(55.5% 0.243 280.5) |
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 #634EFA | 5.24:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #634EFA | 4.00:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #634EFA text on white | 5.24:1 | AA | Lc 75.3 | Fine for body text |
| #634EFA text on black | 4.00:1 | AA large text | Lc -26.4 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B4BAFF
oklch(80.9% 0.098 280.1)
-
Step 400
400
#9093FF
oklch(70.8% 0.156 280.4)
-
Step 500
500
#7772FF
oklch(63% 0.203 280.4)
-
Step 600
600 (this color)
#634EFA
oklch(55.5% 0.243 280.5)
-
Step 700
700
#533DDA
oklch(49.1% 0.225 280.5)
-
Step 800
800
#4334B0
oklch(42.6% 0.187 280.4)
-
Step 900
900
#38308B
oklch(37.7% 0.145 280.8)
-
Step 950
950
#201D52
oklch(27% 0.094 280.6)
#634EFA 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) | #0072FF | 0.095 |
| Deuteranopia (no green cones) | #0066F7 | 0.084 |
| Tritanopia (no blue cones) | #007C9E | 0.202 |
| Achromatopsia (no color) | #6C6C6C | 0.244 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634EFA
#634EFA
oklch(55.5% 0.243 280.5)
- #837400
#837400
oklch(55.6% 0.116 100.3)
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 #634EFA, closest first.
No curated palette has a color within ΔE 0.04 of #634EFA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.054
- Purpley Blue #5F34E7 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.059
- Burple #6832E3 ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.072
- Purpley #8756E4 ΔE 0.073
- Dark Periwinkle #665FD1 ΔE 0.073
- Light Indigo #6D5ACF ΔE 0.073
Use #634EFA 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.