#6659C4
Closest named color: Iris (#6258C4). oklch(53.2% 0.161 285.1), rgb(102, 89, 196).
Aa
White text reads best on this color (5.53:1).
About this color
#6659C4 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.161 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.007 away. White text reads best on it, at 5.53:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.79:1 |
| White text | 5.53:1 |
Values
| HEX | #6659C4 |
| RGB | rgb(102, 89, 196) |
| HSL | hsl(247, 48%, 56%) |
| OKLCH | oklch(53.2% 0.161 285.1) |
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 #6659C4 | 5.53:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #6659C4 | 3.79:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #6659C4 text on white | 5.53:1 | AA | Lc 77.4 | Fine for body text |
| #6659C4 text on black | 3.79:1 | AA large text | Lc -24.4 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D6D6F3
oklch(88.5% 0.04 285.6)
-
Step 300
300
#BBBBEE
oklch(80.9% 0.072 284.7)
-
Step 400
400
#9996E6
oklch(70.7% 0.116 284.7)
-
Step 500
500
#827ADE
oklch(63.2% 0.147 285)
-
Step 600
600 (this color)
#6659C4
oklch(53.2% 0.161 285.1)
-
Step 700
700
#5B4FB1
oklch(49.2% 0.15 285)
-
Step 800
800
#4A418F
oklch(42.7% 0.124 285.1)
-
Step 900
900
#3D3872
oklch(37.7% 0.096 284.7)
-
Step 950
950
#242143
oklch(27% 0.062 285.5)
#6659C4 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) | #1D6CC8 | 0.082 |
| Deuteranopia (no green cones) | #1865C2 | 0.082 |
| Tritanopia (no blue cones) | #467186 | 0.136 |
| Achromatopsia (no color) | #686868 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6659C4
#6659C4
oklch(53.2% 0.161 285.1)
- #776F00
#776F00
oklch(53.2% 0.113 104.6)
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 #6659C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.007
- Slate Blue #6A5ACD ΔE 0.015
- Light Indigo #6D5ACF ΔE 0.020
- Dark Periwinkle #665FD1 ΔE 0.024
- Warm Blue #4B57DB ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.069
- Deep Lavender #8D5EB7 ΔE 0.071
Use #6659C4 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.