#A4B9FA
Closest named color: Pastel Blue (#A2BFFE). oklch(79.4% 0.096 270.3), rgb(164, 185, 250).
Aa
Black text reads best on this color (10.89:1).
About this color
#A4B9FA is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.096 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.015 away. Black text reads best on it, at 10.89:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.89:1 |
| White text | 1.92:1 |
Values
| HEX | #A4B9FA |
| RGB | rgb(164, 185, 250) |
| HSL | hsl(225, 90%, 81%) |
| OKLCH | oklch(79.4% 0.096 270.3) |
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 #A4B9FA | 1.92:1 | Fails | Lc -41.2 | Non-text elements, placeholder text |
| Black text on #A4B9FA | 10.89:1 | AAA | Lc 67.1 | Content text, not long reading |
| #A4B9FA text on white | 1.92:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #A4B9FA text on black | 10.89:1 | AAA | Lc -65.6 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300 (this color)
#A4B9FA
oklch(79.4% 0.096 270.3)
-
Step 400
400
#7D99FF
oklch(70.7% 0.152 270.5)
-
Step 500
500
#5E7CFE
oklch(63.2% 0.195 270.2)
-
Step 600
600
#4860ED
oklch(55.6% 0.213 270.5)
-
Step 700
700
#3A4ECE
oklch(49% 0.198 270.4)
-
Step 800
800
#3041A7
oklch(42.7% 0.164 270.5)
-
Step 900
900
#293984
oklch(37.8% 0.127 270.1)
-
Step 950
950
#18224D
oklch(27% 0.08 270.4)
#A4B9FA 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) | #A4BFFD | 0.015 |
| Deuteranopia (no green cones) | #9DB7F8 | 0.011 |
| Tritanopia (no blue cones) | #8BC6D0 | 0.085 |
| Achromatopsia (no color) | #BBBBBB | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4B9FA
#A4B9FA
oklch(79.4% 0.096 270.3)
- #D3BA72
#D3BA72
oklch(79.5% 0.096 90.9)
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 #A4B9FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.015
- Carolina Blue #8AB8FE ΔE 0.032
- Light Periwinkle #C1C6FC ΔE 0.054
- Sky #82CAFC ΔE 0.054
- Baby Blue #A2CFFE ΔE 0.057
- Lightblue #7BC8F6 ΔE 0.058
- Light Steel Blue #B0C4DE ΔE 0.059
- Light Grey Blue #9DBCD4 ΔE 0.060
Use #A4B9FA 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.