#909DFF
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.7% 0.142 276.5), rgb(144, 157, 255).
Aa
Black text reads best on this color (8.45:1).
About this color
#909DFF is a medium-light, vivid blue. In OKLCH its lightness is 73%, its chroma 0.142 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.011 away. Black text reads best on it, at 8.45:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.45:1 |
| White text | 2.48:1 |
Values
| HEX | #909DFF |
| RGB | rgb(144, 157, 255) |
| HSL | hsl(233, 100%, 78%) |
| OKLCH | oklch(72.7% 0.142 276.5) |
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 #909DFF | 2.48:1 | Fails | Lc -53.7 | Large or bold text, headings |
| Black text on #909DFF | 8.45:1 | AAA | Lc 55.3 | Large or bold text, headings |
| #909DFF text on white | 2.48:1 | Fails | Lc 48.7 | Large or bold text, headings |
| #909DFF text on black | 8.45:1 | AAA | Lc -53.3 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FA
oklch(88.5% 0.049 276.4)
-
Step 300
300
#B1BCFA
oklch(80.9% 0.089 276.4)
-
Step 400
400 (this color)
#909DFF
oklch(72.7% 0.142 276.5)
-
Step 500
500
#7079F5
oklch(63.1% 0.183 276.7)
-
Step 600
600
#5A5EE4
oklch(55.6% 0.199 276.5)
-
Step 700
700
#4B4DC6
oklch(49.2% 0.184 276.5)
-
Step 800
800
#3D40A0
oklch(42.8% 0.152 276.5)
-
Step 900
900
#33377F
oklch(37.6% 0.12 276.6)
-
Step 950
950
#1E214A
oklch(27% 0.075 277)
#909DFF 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) | #79A9FF | 0.038 |
| Deuteranopia (no green cones) | #71A0FD | 0.037 |
| Tritanopia (no blue cones) | #6AB1C2 | 0.126 |
| Achromatopsia (no color) | #A4A4A4 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909DFF
#909DFF
oklch(72.7% 0.142 276.5)
- #C1A61F
#C1A61F
oklch(72.8% 0.143 96.6)
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 #909DFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.011
- Perrywinkle #8F8CE7 ΔE 0.050
- Lavender Blue #8B88F8 ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.064
- Periwinkle #8E82FE ΔE 0.067
- Carolina Blue #8AB8FE ΔE 0.071
- Liliac #C48EFD ΔE 0.080
- Pale Purple #B790D4 ΔE 0.081
Use #909DFF 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.