#817DEF
Closest named color: Periwinkle (#8E82FE). oklch(64.7% 0.166 282.3), rgb(129, 125, 239).
Aa
Black text reads best on this color (6.11:1).
About this color
#817DEF is a medium-light, vivid purple. In OKLCH its lightness is 65%, its chroma 0.166 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle (#8E82FE), ΔE 0.032 away. Black text reads best on it, at 6.11:1.
| Hue family | Purples |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Periwinkle (#8E82FE) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #817DEF |
| RGB | rgb(129, 125, 239) |
| HSL | hsl(242, 78%, 71%) |
| OKLCH | oklch(64.7% 0.166 282.3) |
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 #817DEF | 3.43:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #817DEF | 6.11:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #817DEF text on white | 3.43:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #817DEF text on black | 6.11:1 | AA | Lc -40.0 | 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
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B8BBF4
oklch(81% 0.08 282.1)
-
Step 400
400
#9595EF
oklch(70.7% 0.13 282.6)
-
Step 500
500 (this color)
#817DEF
oklch(64.7% 0.166 282.3)
-
Step 600
600
#675ED8
oklch(55.6% 0.181 282.1)
-
Step 700
700
#564DBB
oklch(49.1% 0.167 282)
-
Step 800
800
#464097
oklch(42.7% 0.138 282)
-
Step 900
900
#3A3779
oklch(37.7% 0.109 281.9)
-
Step 950
950
#222147
oklch(27.1% 0.069 282)
#817DEF 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) | #4C8EF3 | 0.068 |
| Deuteranopia (no green cones) | #4586EC | 0.069 |
| Tritanopia (no blue cones) | #5B95AB | 0.142 |
| Achromatopsia (no color) | #8A8A8A | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #817DEF
#817DEF
oklch(64.7% 0.166 282.3)
- #9F9000
#9F9000
oklch(64.6% 0.135 102)
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 #817DEF, closest first.
No curated palette has a color within ΔE 0.04 of #817DEF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle #8E82FE ΔE 0.032
- Lavender Blue #8B88F8 ΔE 0.033
- Cornflower #6A79F7 ΔE 0.036
- Soft Blue #6488EA ΔE 0.045
- Medium Purple #9370DB ΔE 0.046
- Perrywinkle #8F8CE7 ΔE 0.048
- Medium Slate Blue #7B68EE ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.067
Use #817DEF 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.