#817FFB
Closest named color: Periwinkle (#8E82FE). oklch(65.8% 0.18 281), rgb(129, 127, 251).
Aa
Black text reads best on this color (6.36:1).
About this color
#817FFB is a medium-light, vivid purple. In OKLCH its lightness is 66%, its chroma 0.180 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 6.36:1.
| Hue family | Purples |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Periwinkle (#8E82FE) |
| Black text | 6.36:1 |
| White text | 3.30:1 |
Values
| HEX | #817FFB |
| RGB | rgb(129, 127, 251) |
| HSL | hsl(241, 94%, 74%) |
| OKLCH | oklch(65.8% 0.18 281) |
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 #817FFB | 3.30:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #817FFB | 6.36:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #817FFB text on white | 3.30:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #817FFB text on black | 6.36:1 | AA | Lc -41.6 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
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
#B6BBF9
oklch(81% 0.088 280.7)
-
Step 400
400
#9294F6
oklch(70.6% 0.142 281.2)
-
Step 500
500 (this color)
#817FFB
oklch(65.8% 0.18 281)
-
Step 600
600
#645CE0
oklch(55.6% 0.194 280.7)
-
Step 700
700
#544AC3
oklch(49.1% 0.182 281.1)
-
Step 800
800
#443E9E
oklch(42.8% 0.151 280.7)
-
Step 900
900
#39367D
oklch(37.7% 0.117 281.1)
-
Step 950
950
#212049
oklch(26.9% 0.074 281.3)
#817FFB 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) | #4592FF | 0.073 |
| Deuteranopia (no green cones) | #3B89F8 | 0.075 |
| Tritanopia (no blue cones) | #539AB1 | 0.156 |
| Achromatopsia (no color) | #8D8D8D | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #817FFB
#817FFB
oklch(65.8% 0.18 281)
- #A49300
#A49300
oklch(65.8% 0.137 101.1)
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 #817FFB, closest first.
No curated palette has a color within ΔE 0.04 of #817FFB.
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 0.036
- Soft Blue #6488EA ΔE 0.050
- Perrywinkle #8F8CE7 ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.057
- Medium Purple #9370DB ΔE 0.059
- Cornflower Blue #6495ED ΔE 0.069
Use #817FFB 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.