#909DDE
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.1% 0.096 275), rgb(144, 157, 222).
Aa
Black text reads best on this color (8.06:1).
About this color
#909DDE is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.096 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.047 away. Black text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.06:1 |
| White text | 2.60:1 |
Values
| HEX | #909DDE |
| RGB | rgb(144, 157, 222) |
| HSL | hsl(230, 54%, 72%) |
| OKLCH | oklch(71.1% 0.096 275) |
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 #909DDE | 2.60:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #909DDE | 8.06:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #909DDE text on white | 2.60:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #909DDE text on black | 8.06:1 | AAA | Lc -51.1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B5BEE8
oklch(80.9% 0.06 275.5)
-
Step 400
400 (this color)
#909DDE
oklch(71.1% 0.096 275)
-
Step 500
500
#7482D3
oklch(63.1% 0.123 274.9)
-
Step 600
600
#5E6AC0
oklch(55.6% 0.133 275.2)
-
Step 700
700
#4D58A6
oklch(49.1% 0.124 274.8)
-
Step 800
800
#3F4887
oklch(42.6% 0.104 275)
-
Step 900
900
#363D6C
oklch(37.8% 0.081 275.5)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#909DDE 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) | #88A4E1 | 0.019 |
| Deuteranopia (no green cones) | #839DDC | 0.017 |
| Tritanopia (no blue cones) | #7AAAB4 | 0.086 |
| Achromatopsia (no color) | #A0A0A0 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909DDE
#909DDE
oklch(71.1% 0.096 275)
- #B4A158
#B4A158
oklch(71% 0.096 95.1)
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 #909DDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.047
- Perrywinkle #8F8CE7 ΔE 0.050
- Pale Purple #B790D4 ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.064
- Cool Gray #8D99AE ΔE 0.071
- Bluey Grey #89A0B0 ΔE 0.073
- Lavender Blue #8B88F8 ΔE 0.074
- Carolina Blue #8AB8FE ΔE 0.074
Use #909DDE 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.