#909BC3
Closest named color: Cool Gray (#8D99AE). oklch(69.5% 0.06 272.8), rgb(144, 155, 195).
Aa
Black text reads best on this color (7.66:1).
About this color
#909BC3 is a medium-light, muted blue. In OKLCH its lightness is 69%, its chroma 0.060 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.031 away. Black text reads best on it, at 7.66:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.66:1 |
| White text | 2.74:1 |
Values
| HEX | #909BC3 |
| RGB | rgb(144, 155, 195) |
| HSL | hsl(227, 30%, 66%) |
| OKLCH | oklch(69.5% 0.06 272.8) |
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 #909BC3 | 2.74:1 | Fails | Lc -58.2 | Large or bold text, headings |
| Black text on #909BC3 | 7.66:1 | AAA | Lc 51.0 | Large or bold text, headings |
| #909BC3 text on white | 2.74:1 | Fails | Lc 53.0 | Large or bold text, headings |
| #909BC3 text on black | 7.66:1 | AAA | Lc -48.9 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D4D9E7
oklch(88.6% 0.02 270.2)
-
Step 300
300
#B8C0DA
oklch(81% 0.038 272)
-
Step 400
400 (this color)
#909BC3
oklch(69.5% 0.06 272.8)
-
Step 500
500
#7A87B9
oklch(63.2% 0.077 272.8)
-
Step 600
600
#6370A5
oklch(55.7% 0.084 272.9)
-
Step 700
700
#525D8D
oklch(49% 0.078 273.3)
-
Step 800
800
#434C72
oklch(42.6% 0.064 273.2)
-
Step 900
900
#38405C
oklch(37.7% 0.049 271.6)
-
Step 950
950
#212536
oklch(26.9% 0.032 273.8)
#909BC3 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) | #8F9EC5 | 0.008 |
| Deuteranopia (no green cones) | #8B9AC2 | 0.008 |
| Tritanopia (no blue cones) | #83A3A8 | 0.055 |
| Achromatopsia (no color) | #9C9C9C | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909BC3
#909BC3
oklch(69.5% 0.06 272.8)
- #AA9C72
#AA9C72
oklch(69.4% 0.06 91.8)
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 #909BC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.031
- Bluey Grey #89A0B0 ΔE 0.037
- Bluegrey #85A3B2 ΔE 0.041
- Greyblue #77A1B5 ΔE 0.044
- Cool Steel #97A7B3 ΔE 0.048
- Cool Grey #95A3A6 ΔE 0.055
- Silver Lake Blue #778DA9 ΔE 0.062
- Heather #A484AC ΔE 0.064
Use #909BC3 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.