#A1B1D9
Closest named color: Light Grey Blue (#9DBCD4). oklch(76.2% 0.06 267.9), rgb(161, 177, 217).
Aa
Black text reads best on this color (9.80:1).
About this color
#A1B1D9 is a medium-light, muted blue. In OKLCH its lightness is 76%, its chroma 0.060 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.033 away. Black text reads best on it, at 9.80:1.
| Hue family | Blues |
| Lightness | medium-light (76%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.80:1 |
| White text | 2.14:1 |
Values
| HEX | #A1B1D9 |
| RGB | rgb(161, 177, 217) |
| HSL | hsl(223, 42%, 74%) |
| OKLCH | oklch(76.2% 0.06 267.9) |
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 #A1B1D9 | 2.14:1 | Fails | Lc -46.7 | Large or bold text, headings |
| Black text on #A1B1D9 | 9.80:1 | AAA | Lc 61.9 | Content text, not long reading |
| #A1B1D9 text on white | 2.14:1 | Fails | Lc 42.0 | Non-text elements, placeholder text |
| #A1B1D9 text on black | 9.80:1 | AAA | Lc -60.2 | Content text, not long reading |
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 300.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300 (this color)
#A1B1D9
oklch(76.2% 0.06 267.9)
-
Step 400
400
#879EDD
oklch(70.6% 0.096 268.5)
-
Step 500
500
#6985D4
oklch(63% 0.124 268)
-
Step 600
600
#516EC1
oklch(55.6% 0.133 267.5)
-
Step 700
700
#425BA7
oklch(49.1% 0.125 267.9)
-
Step 800
800
#374B87
oklch(42.8% 0.103 268)
-
Step 900
900
#2F3F6C
oklch(37.7% 0.08 267.7)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#A1B1D9 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) | #A5B4DB | 0.010 |
| Deuteranopia (no green cones) | #A0AFD8 | 0.006 |
| Tritanopia (no blue cones) | #93B9BE | 0.055 |
| Achromatopsia (no color) | #B1B1B1 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1B1D9
#A1B1D9
oklch(76.2% 0.06 267.9)
- #C2B086
#C2B086
oklch(76.2% 0.06 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 #A1B1D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.033
- Light Cornflower Blue #98C1D9 ΔE 0.044
- French Gray #ADB5BD ΔE 0.048
- Cloudy Blue #ACC2D9 ΔE 0.050
- Carolina Blue #8AB8FE ΔE 0.056
- Light Steel Blue #B0C4DE ΔE 0.056
- Pastel Blue #A2BFFE ΔE 0.057
- Cool Steel #97A7B3 ΔE 0.058
Use #A1B1D9 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.