#909CAA
Closest named color: Cool Gray (#8D99AE). oklch(68.8% 0.025 252.3), rgb(144, 156, 170).
Aa
Black text reads best on this color (7.52:1).
About this color
#909CAA is a medium-light close to neutral grey. In OKLCH its lightness is 69%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Cool Gray (#8D99AE), ΔE 0.013 away. Black text reads best on it, at 7.52:1.
| Hue family | Neutrals |
| Lightness | medium-light (69%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.52:1 |
| White text | 2.79:1 |
Values
| HEX | #909CAA |
| RGB | rgb(144, 156, 170) |
| HSL | hsl(212, 13%, 62%) |
| OKLCH | oklch(68.8% 0.025 252.3) |
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 #909CAA | 2.79:1 | Fails | Lc -59.0 | Large or bold text, headings |
| Black text on #909CAA | 7.52:1 | AAA | Lc 50.3 | Large or bold text, headings |
| #909CAA text on white | 2.79:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #909CAA text on black | 7.52:1 | AAA | Lc -48.1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5DADF
oklch(88.6% 0.009 247.9)
-
Step 300
300
#BAC1CB
oklch(80.8% 0.016 257.2)
-
Step 400
400 (this color)
#909CAA
oklch(68.8% 0.025 252.3)
-
Step 500
500
#7C8B9D
oklch(63.1% 0.032 253.1)
-
Step 600
600
#657587
oklch(55.6% 0.034 251.5)
-
Step 700
700
#546273
oklch(49.1% 0.032 253.4)
-
Step 800
800
#45505D
oklch(42.7% 0.026 252.7)
-
Step 900
900
#3A424D
oklch(37.6% 0.022 256.4)
-
Step 950
950
#22272D
oklch(27% 0.013 253)
#909CAA 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) | #979CAB | 0.010 |
| Deuteranopia (no green cones) | #9499AA | 0.010 |
| Tritanopia (no blue cones) | #8A9FA0 | 0.021 |
| Achromatopsia (no color) | #9B9B9B | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909CAA
#909CAA
oklch(68.8% 0.025 252.3)
- #A4998A
#A4998A
oklch(68.8% 0.025 75.8)
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 #909CAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.013
- Bluey Grey #89A0B0 ΔE 0.014
- Bluegrey #85A3B2 ΔE 0.022
- Cool Grey #95A3A6 ΔE 0.024
- Cool Steel #97A7B3 ΔE 0.032
- Greyblue #77A1B5 ΔE 0.033
- Pewter #96A8A1 ΔE 0.042
- Dark Gray #A9A9A9 ΔE 0.053
Use #909CAA 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.