#817FFD
Closest named color: Periwinkle (#8E82FE). oklch(65.9% 0.182 280.9), rgb(129, 127, 253).
Aa
Black text reads best on this color (6.38:1).
About this color
#817FFD is a medium-light, vivid purple. In OKLCH its lightness is 66%, its chroma 0.182 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle (#8E82FE), ΔE 0.021 away. Black text reads best on it, at 6.38:1.
| Hue family | Purples |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Periwinkle (#8E82FE) |
| Black text | 6.38:1 |
| White text | 3.28:1 |
Values
| HEX | #817FFD |
| RGB | rgb(129, 127, 253) |
| HSL | hsl(241, 97%, 75%) |
| OKLCH | oklch(65.9% 0.182 280.9) |
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 #817FFD | 3.28:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #817FFD | 6.38:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #817FFD text on white | 3.28:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #817FFD text on black | 6.38:1 | AA | Lc -41.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D3D6FA
oklch(88.5% 0.05 281.6)
-
Step 300
300
#B6BAFA
oklch(80.9% 0.09 281.4)
-
Step 400
400
#9294F7
oklch(70.7% 0.143 281.2)
-
Step 500
500 (this color)
#817FFD
oklch(65.9% 0.182 280.9)
-
Step 600
600
#645BE2
oklch(55.6% 0.198 280.8)
-
Step 700
700
#544AC4
oklch(49.2% 0.183 281)
-
Step 800
800
#443D9F
oklch(42.7% 0.153 280.9)
-
Step 900
900
#39367E
oklch(37.8% 0.118 281)
-
Step 950
950
#21204A
oklch(27% 0.076 281.1)
#817FFD 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) | #4392FF | 0.074 |
| Deuteranopia (no green cones) | #3889FA | 0.077 |
| Tritanopia (no blue cones) | #529AB2 | 0.157 |
| Achromatopsia (no color) | #8E8E8E | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #817FFD
#817FFD
oklch(65.9% 0.182 280.9)
- #A59300
#A59300
oklch(65.9% 0.137 100.6)
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 #817FFD, closest first.
No curated palette has a color within ΔE 0.04 of #817FFD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle #8E82FE ΔE 0.021
- Lavender Blue #8B88F8 ΔE 0.029
- Cornflower #6A79F7 ΔE 0.037
- Soft Blue #6488EA ΔE 0.052
- Perrywinkle #8F8CE7 ΔE 0.055
- Medium Slate Blue #7B68EE ΔE 0.058
- Medium Purple #9370DB ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.070
Use #817FFD 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.