#909DAF
Closest named color: Bluey Grey (#89A0B0). oklch(69.2% 0.03 256.5), rgb(144, 157, 175).
Aa
Black text reads best on this color (7.62:1).
About this color
#909DAF is a medium-light, muted blue. In OKLCH its lightness is 69%, its chroma 0.030 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Bluey Grey (#89A0B0), ΔE 0.011 away. Black text reads best on it, at 7.62:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Bluey Grey (#89A0B0) |
| Black text | 7.62:1 |
| White text | 2.75:1 |
Values
| HEX | #909DAF |
| RGB | rgb(144, 157, 175) |
| HSL | hsl(215, 16%, 63%) |
| OKLCH | oklch(69.2% 0.03 256.5) |
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 #909DAF | 2.75:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #909DAF | 7.62:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #909DAF text on white | 2.75:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #909DAF text on black | 7.62:1 | AAA | Lc -48.6 | 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
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D5D9E0
oklch(88.4% 0.011 261.8)
-
Step 300
300
#B9C1CD
oklch(80.8% 0.019 258.4)
-
Step 400
400 (this color)
#909DAF
oklch(69.2% 0.03 256.5)
-
Step 500
500
#7B8BA1
oklch(63.2% 0.038 256.4)
-
Step 600
600
#64758C
oklch(55.7% 0.041 256)
-
Step 700
700
#526277
oklch(49.1% 0.039 255.3)
-
Step 800
800
#445061
oklch(42.8% 0.032 257.1)
-
Step 900
900
#39424F
oklch(37.6% 0.025 257.5)
-
Step 950
950
#21272E
oklch(27% 0.016 252.4)
#909DAF 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) | #979EB0 | 0.010 |
| Deuteranopia (no green cones) | #949AAF | 0.010 |
| Tritanopia (no blue cones) | #88A1A3 | 0.027 |
| Achromatopsia (no color) | #9C9C9C | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #909DAF
#909DAF
oklch(69.2% 0.03 256.5)
- #A79A87
#A79A87
oklch(69.2% 0.031 77.4)
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 #909DAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Grey #89A0B0 ΔE 0.011
- Cool Gray #8D99AE ΔE 0.012
- Bluegrey #85A3B2 ΔE 0.020
- Cool Grey #95A3A6 ΔE 0.026
- Cool Steel #97A7B3 ΔE 0.030
- Greyblue #77A1B5 ΔE 0.031
- Pewter #96A8A1 ΔE 0.044
- Dark Gray #A9A9A9 ΔE 0.053
Use #909DAF 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.