#665ABE
Closest named color: Iris (#6258C4). oklch(53% 0.151 285.5), rgb(102, 90, 190).
Aa
White text reads best on this color (5.56:1).
About this color
#665ABE is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.151 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.013 away. White text reads best on it, at 5.56:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.77:1 |
| White text | 5.56:1 |
Values
| HEX | #665ABE |
| RGB | rgb(102, 90, 190) |
| HSL | hsl(247, 43%, 55%) |
| OKLCH | oklch(53% 0.151 285.5) |
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 #665ABE | 5.56:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #665ABE | 3.77:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #665ABE text on white | 5.56:1 | AA | Lc 77.6 | Fine for body text |
| #665ABE text on black | 3.77:1 | AA large text | Lc -24.2 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D6D6F2
oklch(88.5% 0.038 285.6)
-
Step 300
300
#BCBBEB
oklch(80.9% 0.067 285.7)
-
Step 400
400
#9A96E2
oklch(70.6% 0.11 285.6)
-
Step 500
500
#837BD9
oklch(63.2% 0.138 285.6)
-
Step 600
600 (this color)
#665ABE
oklch(53% 0.151 285.5)
-
Step 700
700
#5B50AC
oklch(49% 0.142 285.3)
-
Step 800
800
#4B428B
oklch(42.7% 0.117 285.9)
-
Step 900
900
#3E396F
oklch(37.8% 0.09 285.4)
-
Step 950
950
#242241
oklch(27.1% 0.057 284.9)
#665ABE 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) | #296BC1 | 0.075 |
| Deuteranopia (no green cones) | #2665BC | 0.075 |
| Tritanopia (no blue cones) | #497083 | 0.129 |
| Achromatopsia (no color) | #686868 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #665ABE
#665ABE
oklch(53% 0.151 285.5)
- #756F00
#756F00
oklch(53% 0.113 105.9)
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 #665ABE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.013
- Slate Blue #6A5ACD ΔE 0.024
- Light Indigo #6D5ACF ΔE 0.029
- Dark Periwinkle #665FD1 ΔE 0.031
- Bluey Purple #6241C7 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.060
- Deep Lavender #8D5EB7 ΔE 0.068
- French Blue #436BAD ΔE 0.069
Use #665ABE 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.