#6659A7
Closest named color: Iris (#6258C4). oklch(51.3% 0.121 289.1), rgb(102, 89, 167).
Aa
White text reads best on this color (5.91:1).
About this color
#6659A7 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 51%, its chroma 0.121 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.047 away. White text reads best on it, at 5.91:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.55:1 |
| White text | 5.91:1 |
Values
| HEX | #6659A7 |
| RGB | rgb(102, 89, 167) |
| HSL | hsl(250, 31%, 50%) |
| OKLCH | oklch(51.3% 0.121 289.1) |
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 #6659A7 | 5.91:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #6659A7 | 3.55:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #6659A7 text on white | 5.91:1 | AA | Lc 79.4 | Fine for body text |
| #6659A7 text on black | 3.55:1 | AA large text | Lc -22.4 | 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 700.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#BFBBE5
oklch(80.9% 0.059 289.4)
-
Step 400
400
#9E97D7
oklch(70.6% 0.093 288.8)
-
Step 500
500
#887CCD
oklch(63.1% 0.12 289.3)
-
Step 600
600
#7264BA
oklch(55.6% 0.13 288.9)
-
Step 700
700 (this color)
#6659A7
oklch(51.3% 0.121 289.1)
-
Step 800
800
#4E4482
oklch(42.7% 0.1 288.8)
-
Step 900
900
#413A68
oklch(37.8% 0.077 289.1)
-
Step 950
950
#26223D
oklch(27% 0.049 289.5)
#6659A7 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) | #3D66AA | 0.060 |
| Deuteranopia (no green cones) | #3D62A5 | 0.058 |
| Tritanopia (no blue cones) | #556878 | 0.100 |
| Achromatopsia (no color) | #646464 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6659A7
#6659A7
oklch(51.3% 0.121 289.1)
- #6C6B00
#6C6B00
oklch(51.2% 0.111 109.1)
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 #6659A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.060
- French Blue #436BAD ΔE 0.062
- Twilight #4E518B ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.065
- Muted Purple #805B87 ΔE 0.069
Use #6659A7 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.