#909FBF
Closest named color: Bluey Grey (#89A0B0). oklch(70.2% 0.05 265.3), rgb(144, 159, 191).
Aa
Black text reads best on this color (7.89:1).
About this color
#909FBF is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.050 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.026 away. Black text reads best on it, at 7.89:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 7.89:1 |
| White text | 2.65:1 |
Values
| HEX | #909FBF |
| RGB | rgb(144, 159, 191) |
| HSL | hsl(221, 27%, 66%) |
| OKLCH | oklch(70.2% 0.05 265.3) |
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 #909FBF | 2.65:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #909FBF | 7.89:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #909FBF text on white | 2.65:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #909FBF text on black | 7.89:1 | AAA | Lc -50.2 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B7C1D6
oklch(81% 0.032 265.3)
-
Step 400
400 (this color)
#909FBF
oklch(70.2% 0.05 265.3)
-
Step 500
500
#7789B1
oklch(63.1% 0.064 265.8)
-
Step 600
600
#60739D
oklch(55.7% 0.069 265.4)
-
Step 700
700
#4F6086
oklch(49.1% 0.065 265.5)
-
Step 800
800
#414E6D
oklch(42.6% 0.054 266.6)
-
Step 900
900
#374158
oklch(37.6% 0.042 266.2)
-
Step 950
950
#202634
oklch(26.9% 0.028 266.5)
#909FBF 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) | #95A1C1 | 0.009 |
| Deuteranopia (no green cones) | #919DBE | 0.005 |
| Tritanopia (no blue cones) | #84A5A9 | 0.045 |
| Achromatopsia (no color) | #9F9F9F | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909FBF
#909FBF
oklch(70.2% 0.05 265.3)
- #AD9D7C
#AD9D7C
oklch(70.1% 0.049 85.1)
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 #909FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.026
- Cool Gray #8D99AE ΔE 0.027
- Bluegrey #85A3B2 ΔE 0.029
- Cool Steel #97A7B3 ΔE 0.034
- Greyblue #77A1B5 ΔE 0.037
- Cool Grey #95A3A6 ΔE 0.042
- Pewter #96A8A1 ΔE 0.058
- Dark Gray #A9A9A9 ΔE 0.060
Use #909FBF 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.