#8183FF
Closest named color: Periwinkle (#8E82FE). oklch(66.8% 0.18 279.7), rgb(129, 131, 255).
Aa
Black text reads best on this color (6.62:1).
About this color
#8183FF is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.180 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle (#8E82FE), ΔE 0.018 away. Black text reads best on it, at 6.62:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Periwinkle (#8E82FE) |
| Black text | 6.62:1 |
| White text | 3.17:1 |
Values
| HEX | #8183FF |
| RGB | rgb(129, 131, 255) |
| HSL | hsl(239, 100%, 75%) |
| OKLCH | oklch(66.8% 0.18 279.7) |
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 #8183FF | 3.17:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #8183FF | 6.62:1 | AA | Lc 45.4 | Large or bold text, headings |
| #8183FF text on white | 3.17:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #8183FF text on black | 6.62:1 | AA | Lc -43.1 | 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
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B5BBF9
oklch(80.9% 0.088 279.9)
-
Step 400
400
#9095F6
oklch(70.7% 0.141 279.9)
-
Step 500
500 (this color)
#8183FF
oklch(66.8% 0.18 279.7)
-
Step 600
600
#625DE1
oklch(55.7% 0.195 279.7)
-
Step 700
700
#514BC3
oklch(49% 0.181 279.6)
-
Step 800
800
#423F9E
oklch(42.8% 0.15 279.4)
-
Step 900
900
#37367D
oklch(37.6% 0.117 279.8)
-
Step 950
950
#202149
oklch(27.1% 0.073 279.3)
#8183FF 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) | #4996FF | 0.070 |
| Deuteranopia (no green cones) | #3E8CFC | 0.071 |
| Tritanopia (no blue cones) | #509EB5 | 0.156 |
| Achromatopsia (no color) | #919191 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8183FF
#8183FF
oklch(66.8% 0.18 279.7)
- #A99500
#A99500
oklch(66.7% 0.139 99.7)
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 #8183FF, closest first.
No curated palette has a color within ΔE 0.04 of #8183FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle #8E82FE ΔE 0.018
- Lavender Blue #8B88F8 ΔE 0.023
- Cornflower #6A79F7 ΔE 0.043
- Perrywinkle #8F8CE7 ΔE 0.050
- Soft Blue #6488EA ΔE 0.051
- Periwinkle Blue #8F99FB ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.064
- Medium Slate Blue #7B68EE ΔE 0.067
Use #8183FF 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.