#6558D4
Closest named color: Slate Blue (#6A5ACD). oklch(54.1% 0.184 283.1), rgb(101, 88, 212).
Aa
White text reads best on this color (5.38:1).
About this color
#6558D4 is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.184 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.015 away. White text reads best on it, at 5.38:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #6558D4 |
| RGB | rgb(101, 88, 212) |
| HSL | hsl(246, 59%, 59%) |
| OKLCH | oklch(54.1% 0.184 283.1) |
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 #6558D4 | 5.38:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #6558D4 | 3.89:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #6558D4 text on white | 5.38:1 | AA | Lc 76.5 | Fine for body text |
| #6558D4 text on black | 3.89:1 | AA large text | Lc -25.3 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B9BAF5
oklch(80.9% 0.083 283.6)
-
Step 400
400
#9694F0
oklch(70.6% 0.133 283.4)
-
Step 500
500
#7E77EB
oklch(63.1% 0.169 283.1)
-
Step 600
600 (this color)
#6558D4
oklch(54.1% 0.184 283.1)
-
Step 700
700
#584BBC
oklch(49% 0.171 283.3)
-
Step 800
800
#483F98
oklch(42.8% 0.14 283.3)
-
Step 900
900
#3B3679
oklch(37.6% 0.11 283.1)
-
Step 950
950
#222047
oklch(26.9% 0.071 282.9)
#6558D4 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) | #006ED8 | 0.088 |
| Deuteranopia (no green cones) | #0066D1 | 0.086 |
| Tritanopia (no blue cones) | #37758D | 0.157 |
| Achromatopsia (no color) | #6A6A6A | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6558D4
#6558D4
oklch(54.1% 0.184 283.1)
- #7B7100
#7B7100
oklch(54.1% 0.114 103.4)
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 #6558D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.015
- Light Indigo #6D5ACF ΔE 0.016
- Dark Periwinkle #665FD1 ΔE 0.018
- Iris #6258C4 ΔE 0.025
- Warm Blue #4B57DB ΔE 0.039
- Bluey Purple #6241C7 ΔE 0.053
- Royal Blue #4169E1 ΔE 0.057
- Neon Blue #4361EE ΔE 0.059
Use #6558D4 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.