#6357EA
Closest named color: Warm Blue (#4B57DB). oklch(55.5% 0.213 280.5), rgb(99, 87, 234).
Aa
White text reads best on this color (5.14:1).
About this color
#6357EA is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.213 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.041 away. White text reads best on it, at 5.14:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.213) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 4.08:1 |
| White text | 5.14:1 |
Values
| HEX | #6357EA |
| RGB | rgb(99, 87, 234) |
| HSL | hsl(245, 78%, 63%) |
| OKLCH | oklch(55.5% 0.213 280.5) |
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 #6357EA | 5.14:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #6357EA | 4.08:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #6357EA text on white | 5.14:1 | AA | Lc 74.9 | Content text, not long reading |
| #6357EA text on black | 4.08:1 | AA large text | Lc -26.8 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
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
#9093FD
oklch(70.7% 0.153 280.5)
-
Step 500
500
#7874FB
oklch(63.2% 0.195 280.5)
-
Step 600
600 (this color)
#6357EA
oklch(55.5% 0.213 280.5)
-
Step 700
700
#5346CC
oklch(49.1% 0.199 280.6)
-
Step 800
800
#433BA5
oklch(42.7% 0.164 280.2)
-
Step 900
900
#383483
oklch(37.7% 0.129 280.5)
-
Step 950
950
#201F4C
oklch(26.9% 0.081 280.5)
#6357EA 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) | #0073EF | 0.088 |
| Deuteranopia (no green cones) | #0068E7 | 0.081 |
| Tritanopia (no blue cones) | #077C99 | 0.183 |
| Achromatopsia (no color) | #6D6D6D | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6357EA
#6357EA
oklch(55.5% 0.213 280.5)
- #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 #6357EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.041
- Neon Blue #4361EE ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.043
- Light Indigo #6D5ACF ΔE 0.045
- Slate Blue #6A5ACD ΔE 0.047
- Royal Blue #4169E1 ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.056
- Iris #6258C4 ΔE 0.059
Use #6357EA 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.