#909FCF
Closest named color: Cool Gray (#8D99AE). oklch(70.8% 0.072 271), rgb(144, 159, 207).
Aa
Black text reads best on this color (8.04:1).
About this color
#909FCF is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.072 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.048 away. Black text reads best on it, at 8.04:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 8.04:1 |
| White text | 2.60:1 |
Values
| HEX | #909FCF |
| RGB | rgb(144, 159, 207) |
| HSL | hsl(226, 40%, 69%) |
| OKLCH | oklch(70.8% 0.072 271) |
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 #909FCF | 2.60:1 | Fails | Lc -56.1 | Large or bold text, headings |
| Black text on #909FCF | 8.04:1 | AAA | Lc 53.1 | Large or bold text, headings |
| #909FCF text on white | 2.60:1 | Fails | Lc 50.9 | Large or bold text, headings |
| #909FCF text on black | 8.04:1 | AAA | Lc -51.0 | 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
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D3D9EA
oklch(88.6% 0.024 270.3)
-
Step 300
300
#B5C0DF
oklch(80.9% 0.045 269.9)
-
Step 400
400 (this color)
#909FCF
oklch(70.8% 0.072 271)
-
Step 500
500
#7586C2
oklch(63.1% 0.093 271.4)
-
Step 600
600
#5E6FAE
oklch(55.6% 0.1 271.4)
-
Step 700
700
#4D5D96
oklch(49.1% 0.094 270.8)
-
Step 800
800
#3F4C7A
oklch(42.7% 0.078 270.8)
-
Step 900
900
#364062
oklch(37.8% 0.06 270.8)
-
Step 950
950
#1F2539
oklch(26.9% 0.038 270.9)
#909FCF 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) | #90A3D1 | 0.011 |
| Deuteranopia (no green cones) | #8B9ECE | 0.008 |
| Tritanopia (no blue cones) | #7FA8AF | 0.065 |
| Achromatopsia (no color) | #A0A0A0 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909FCF
#909FCF
oklch(70.8% 0.072 271)
- #B2A06C
#B2A06C
oklch(70.9% 0.073 91.1)
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 #909FCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.048
- Bluey Grey #89A0B0 ΔE 0.049
- Bluegrey #85A3B2 ΔE 0.051
- Greyblue #77A1B5 ΔE 0.054
- Cool Steel #97A7B3 ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.066
- Pale Purple #B790D4 ΔE 0.067
- Perrywinkle #8F8CE7 ΔE 0.069
Use #909FCF 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.