#818EFF
Closest named color: Lavender Blue (#8B88F8). oklch(68.8% 0.165 276.2), rgb(129, 142, 255).
Aa
Black text reads best on this color (7.24:1).
About this color
#818EFF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.165 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Lavender Blue (#8B88F8), ΔE 0.020 away. Black text reads best on it, at 7.24:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Lavender Blue (#8B88F8) |
| Black text | 7.24:1 |
| White text | 2.89:1 |
Values
| HEX | #818EFF |
| RGB | rgb(129, 142, 255) |
| HSL | hsl(234, 100%, 75%) |
| OKLCH | oklch(68.8% 0.165 276.2) |
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 #818EFF | 2.89:1 | Fails | Lc -60.4 | Content text, not long reading |
| Black text on #818EFF | 7.24:1 | AAA | Lc 48.9 | Large or bold text, headings |
| #818EFF text on white | 2.89:1 | Fails | Lc 55.1 | Large or bold text, headings |
| #818EFF text on black | 7.24:1 | AAA | Lc -46.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FF
oklch(88.6% 0.056 276.3)
-
Step 300
300
#B0BCFF
oklch(81% 0.096 276.2)
-
Step 400
400 (this color)
#818EFF
oklch(68.8% 0.165 276.2)
-
Step 500
500
#6D76FF
oklch(63% 0.2 276.2)
-
Step 600
600
#5857F5
oklch(55.6% 0.229 276.2)
-
Step 700
700
#4945D6
oklch(49.1% 0.214 276.3)
-
Step 800
800
#3B3AAC
oklch(42.6% 0.177 276.2)
-
Step 900
900
#313488
oklch(37.6% 0.137 276)
-
Step 950
950
#1D1F50
oklch(26.9% 0.088 277)
#818EFF 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) | #5F9DFF | 0.050 |
| Deuteranopia (no green cones) | #5393FD | 0.051 |
| Tritanopia (no blue cones) | #4EA6BA | 0.146 |
| Achromatopsia (no color) | #989898 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818EFF
#818EFF
oklch(68.8% 0.165 276.2)
- #B59900
#B59900
oklch(68.8% 0.141 95.9)
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 #818EFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lavender Blue #8B88F8 ΔE 0.020
- Periwinkle #8E82FE ΔE 0.032
- Periwinkle Blue #8F99FB ΔE 0.037
- Perrywinkle #8F8CE7 ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.048
- Soft Blue #6488EA ΔE 0.051
- Cornflower #6A79F7 ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.067
Use #818EFF 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.