#6561CE
Closest named color: Dark Periwinkle (#665FD1). oklch(55.3% 0.164 281.3), rgb(101, 97, 206).
Aa
White text reads best on this color (5.05:1).
About this color
#6561CE is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.164 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.007 away. White text reads best on it, at 5.05:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #6561CE |
| RGB | rgb(101, 97, 206) |
| HSL | hsl(242, 53%, 59%) |
| OKLCH | oklch(55.3% 0.164 281.3) |
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 #6561CE | 5.05:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #6561CE | 4.15:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #6561CE text on white | 5.05:1 | AA | Lc 74.6 | Content text, not long reading |
| #6561CE text on black | 4.15:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F8
oklch(93.7% 0.02 279.9)
-
Step 200
200
#D4D7F4
oklch(88.6% 0.04 280.9)
-
Step 300
300
#B8BCF0
oklch(81% 0.073 281.2)
-
Step 400
400
#9497E8
oklch(70.6% 0.118 281.3)
-
Step 500
500
#7B7BE1
oklch(63% 0.151 281.2)
-
Step 600
600 (this color)
#6561CE
oklch(55.3% 0.164 281.3)
-
Step 700
700
#5550B3
oklch(49% 0.152 281.5)
-
Step 800
800
#454291
oklch(42.6% 0.127 281.3)
-
Step 900
900
#3A3974
oklch(37.7% 0.098 281.4)
-
Step 950
950
#222244
oklch(27.1% 0.062 281.4)
#6561CE 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) | #2673D2 | 0.072 |
| Deuteranopia (no green cones) | #196BCC | 0.074 |
| Tritanopia (no blue cones) | #3B798E | 0.141 |
| Achromatopsia (no color) | #6F6F6F | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6561CE
#6561CE
oklch(55.3% 0.164 281.3)
- #817400
#817400
oklch(55.4% 0.116 101.6)
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 #6561CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.007
- Slate Blue #6A5ACD ΔE 0.017
- Light Indigo #6D5ACF ΔE 0.019
- Iris #6258C4 ΔE 0.026
- Warm Blue #4B57DB ΔE 0.051
- Royal Blue #4169E1 ΔE 0.052
- Medium Slate Blue #7B68EE ΔE 0.061
- Neon Blue #4361EE ΔE 0.064
Use #6561CE 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.