#909CA9
Closest named color: Cool Gray (#8D99AE). oklch(68.7% 0.024 250.3), rgb(144, 156, 169).
Aa
Black text reads best on this color (7.51:1).
About this color
#909CA9 is a medium-light close to neutral grey. In OKLCH its lightness is 69%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Cool Gray (#8D99AE), ΔE 0.014 away. Black text reads best on it, at 7.51:1.
| Hue family | Neutrals |
| Lightness | medium-light (69%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.51:1 |
| White text | 2.79:1 |
Values
| HEX | #909CA9 |
| RGB | rgb(144, 156, 169) |
| HSL | hsl(211, 13%, 61%) |
| OKLCH | oklch(68.7% 0.024 250.3) |
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 #909CA9 | 2.79:1 | Fails | Lc -59.1 | Large or bold text, headings |
| Black text on #909CA9 | 7.51:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #909CA9 text on white | 2.79:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #909CA9 text on black | 7.51:1 | AAA | Lc -48.0 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5DADE
oklch(88.6% 0.008 241.7)
-
Step 300
300
#BAC2CA
oklch(81% 0.014 248)
-
Step 400
400 (this color)
#909CA9
oklch(68.7% 0.024 250.3)
-
Step 500
500
#7C8B9B
oklch(63% 0.03 250)
-
Step 600
600
#657586
oklch(55.5% 0.033 250)
-
Step 700
700
#546272
oklch(49% 0.031 251.9)
-
Step 800
800
#45505D
oklch(42.7% 0.026 252.7)
-
Step 900
900
#3A434C
oklch(37.8% 0.019 248.3)
-
Step 950
950
#22272C
oklch(27% 0.012 248.3)
#909CA9 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) | #979CAA | 0.010 |
| Deuteranopia (no green cones) | #9499A9 | 0.010 |
| Tritanopia (no blue cones) | #8A9FA0 | 0.020 |
| Achromatopsia (no color) | #9B9B9B | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909CA9
#909CA9
oklch(68.7% 0.024 250.3)
- #A4988B
#A4988B
oklch(68.6% 0.023 69.7)
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 #909CA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.014
- Bluey Grey #89A0B0 ΔE 0.014
- Bluegrey #85A3B2 ΔE 0.022
- Cool Grey #95A3A6 ΔE 0.023
- Cool Steel #97A7B3 ΔE 0.033
- Greyblue #77A1B5 ΔE 0.033
- Pewter #96A8A1 ΔE 0.041
- Dark Gray #A9A9A9 ΔE 0.053
Use #909CA9 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.