#909DBF
Closest named color: Cool Gray (#8D99AE). oklch(69.8% 0.052 268.6), rgb(144, 157, 191).
Aa
Black text reads best on this color (7.76:1).
About this color
#909DBF is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.052 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.026 away. Black text reads best on it, at 7.76:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.76:1 |
| White text | 2.70:1 |
Values
| HEX | #909DBF |
| RGB | rgb(144, 157, 191) |
| HSL | hsl(223, 27%, 66%) |
| OKLCH | oklch(69.8% 0.052 268.6) |
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 #909DBF | 2.70:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #909DBF | 7.76:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #909DBF text on white | 2.70:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #909DBF text on black | 7.76:1 | AAA | Lc -49.4 | 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
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D6
oklch(80.9% 0.032 269.8)
-
Step 400
400 (this color)
#909DBF
oklch(69.8% 0.052 268.6)
-
Step 500
500
#7888B3
oklch(63% 0.068 268.6)
-
Step 600
600
#61729E
oklch(55.6% 0.072 267.8)
-
Step 700
700
#515F87
oklch(49.1% 0.067 269.1)
-
Step 800
800
#424E6E
oklch(42.7% 0.056 268.2)
-
Step 900
900
#384159
oklch(37.8% 0.043 268.4)
-
Step 950
950
#212634
oklch(27% 0.027 269.3)
#909DBF 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) | #939FC1 | 0.007 |
| Deuteranopia (no green cones) | #8F9BBE | 0.006 |
| Tritanopia (no blue cones) | #84A4A8 | 0.048 |
| Achromatopsia (no color) | #9D9D9D | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909DBF
#909DBF
oklch(69.8% 0.052 268.6)
- #AB9C79
#AB9C79
oklch(69.7% 0.052 87.5)
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 #909DBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.026
- Bluey Grey #89A0B0 ΔE 0.028
- Bluegrey #85A3B2 ΔE 0.033
- Greyblue #77A1B5 ΔE 0.038
- Cool Steel #97A7B3 ΔE 0.039
- Cool Grey #95A3A6 ΔE 0.046
- Pewter #96A8A1 ΔE 0.062
- Silver Lake Blue #778DA9 ΔE 0.063
Use #909DBF 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.