#8573EE
Closest named color: Medium Slate Blue (#7B68EE). oklch(63.1% 0.178 286.8), rgb(133, 115, 238).
Aa
Black text reads best on this color (5.68:1).
About this color
#8573EE is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.178 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.031 away. Black text reads best on it, at 5.68:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #8573EE |
| RGB | rgb(133, 115, 238) |
| HSL | hsl(249, 78%, 69%) |
| OKLCH | oklch(63.1% 0.178 286.8) |
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 #8573EE | 3.69:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #8573EE | 5.68:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #8573EE text on white | 3.69:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #8573EE text on black | 5.68:1 | AA | Lc -37.4 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D6D5F8
oklch(88.5% 0.048 286.7)
-
Step 300
300
#BCB9F7
oklch(81% 0.087 286.5)
-
Step 400
400
#9B92F3
oklch(70.8% 0.139 286.5)
-
Step 500
500 (this color)
#8573EE
oklch(63.1% 0.178 286.8)
-
Step 600
600
#7058DC
oklch(55.6% 0.193 286.7)
-
Step 700
700
#5E47BF
oklch(49.1% 0.179 286.6)
-
Step 800
800
#4D3B9B
oklch(42.8% 0.15 286.9)
-
Step 900
900
#3F347B
oklch(37.7% 0.116 286.5)
-
Step 950
950
#251F48
oklch(27% 0.074 287.1)
#8573EE 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) | #3988F2 | 0.091 |
| Deuteranopia (no green cones) | #3782EB | 0.091 |
| Tritanopia (no blue cones) | #648DA6 | 0.149 |
| Achromatopsia (no color) | #858585 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8573EE
#8573EE
oklch(63.1% 0.178 286.8)
- #948E00
#948E00
oklch(63.1% 0.135 106.7)
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 #8573EE, closest first.
No curated palette has a color within ΔE 0.04 of #8573EE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.031
- Medium Purple #9370DB ΔE 0.035
- Cornflower #6A79F7 ΔE 0.040
- Periwinkle #8E82FE ΔE 0.044
- Lavender Blue #8B88F8 ΔE 0.053
- Purpley #8756E4 ΔE 0.064
- Soft Blue #6488EA ΔE 0.064
- Perrywinkle #8F8CE7 ΔE 0.068
Use #8573EE 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.