#909CD3
Closest named color: Cool Gray (#8D99AE). oklch(70.4% 0.082 274.6), rgb(144, 156, 211).
Aa
Black text reads best on this color (7.88:1).
About this color
#909CD3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.082 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.055 away. Black text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.88:1 |
| White text | 2.66:1 |
Values
| HEX | #909CD3 |
| RGB | rgb(144, 156, 211) |
| HSL | hsl(229, 43%, 70%) |
| OKLCH | oklch(70.4% 0.082 274.6) |
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 #909CD3 | 2.66:1 | Fails | Lc -57.0 | Large or bold text, headings |
| Black text on #909CD3 | 7.88:1 | AAA | Lc 52.2 | Large or bold text, headings |
| #909CD3 text on white | 2.66:1 | Fails | Lc 51.8 | Large or bold text, headings |
| #909CD3 text on black | 7.88:1 | AAA | Lc -50.1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D3D8EC
oklch(88.4% 0.028 274.6)
-
Step 300
300
#B6BFE2
oklch(80.9% 0.05 273.9)
-
Step 400
400 (this color)
#909CD3
oklch(70.4% 0.082 274.6)
-
Step 500
500
#7784C9
oklch(63.2% 0.105 274.9)
-
Step 600
600
#606DB5
oklch(55.7% 0.113 274.4)
-
Step 700
700
#4F5A9C
oklch(49% 0.106 274.7)
-
Step 800
800
#414A7F
oklch(42.7% 0.088 274.8)
-
Step 900
900
#373E66
oklch(37.7% 0.069 275.1)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#909CD3 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) | #8BA1D5 | 0.014 |
| Deuteranopia (no green cones) | #869CD2 | 0.013 |
| Tritanopia (no blue cones) | #7EA6AF | 0.072 |
| Achromatopsia (no color) | #9E9E9E | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909CD3
#909CD3
oklch(70.4% 0.082 274.6)
- #B09F63
#B09F63
oklch(70.3% 0.082 94.1)
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 #909CD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.055
- Perrywinkle #8F8CE7 ΔE 0.058
- Bluey Grey #89A0B0 ΔE 0.058
- Bluegrey #85A3B2 ΔE 0.061
- Greyblue #77A1B5 ΔE 0.061
- Pale Purple #B790D4 ΔE 0.062
- Periwinkle Blue #8F99FB ΔE 0.062
- Cool Steel #97A7B3 ΔE 0.065
Use #909CD3 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.