#909BDF
Closest named color: Periwinkle Blue (#8F99FB). oklch(70.7% 0.1 276.5), rgb(144, 155, 223).
Aa
Black text reads best on this color (7.93:1).
About this color
#909BDF is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.100 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.043 away. Black text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 7.93:1 |
| White text | 2.64:1 |
Values
| HEX | #909BDF |
| RGB | rgb(144, 155, 223) |
| HSL | hsl(232, 55%, 72%) |
| OKLCH | oklch(70.7% 0.1 276.5) |
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 #909BDF | 2.64:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #909BDF | 7.93:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #909BDF text on white | 2.64:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #909BDF text on black | 7.93:1 | AAA | Lc -50.4 | 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
#D3D8F1
oklch(88.6% 0.035 276.7)
-
Step 300
300
#B5BEEA
oklch(80.9% 0.063 275.9)
-
Step 400
400 (this color)
#909BDF
oklch(70.7% 0.1 276.5)
-
Step 500
500
#7681D6
oklch(63.2% 0.128 276.5)
-
Step 600
600
#5F69C3
oklch(55.6% 0.139 276.2)
-
Step 700
700
#4F57A9
oklch(49.2% 0.13 276.3)
-
Step 800
800
#414789
oklch(42.7% 0.108 276.9)
-
Step 900
900
#363C6D
oklch(37.6% 0.084 276.3)
-
Step 950
950
#202440
oklch(27.1% 0.052 276.2)
#909BDF 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) | #85A2E2 | 0.021 |
| Deuteranopia (no green cones) | #809CDD | 0.021 |
| Tritanopia (no blue cones) | #7AA8B3 | 0.089 |
| Achromatopsia (no color) | #9F9F9F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909BDF
#909BDF
oklch(70.7% 0.1 276.5)
- #B3A153
#B3A153
oklch(70.8% 0.101 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 #909BDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.043
- Perrywinkle #8F8CE7 ΔE 0.044
- Pale Purple #B790D4 ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.069
- Cool Gray #8D99AE ΔE 0.073
- Bluey Grey #89A0B0 ΔE 0.077
- Greyblue #77A1B5 ΔE 0.078
Use #909BDF 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.