#A3CDEB
Closest named color: Light Blue Grey (#B7C9E2). oklch(82.8% 0.061 239.5), rgb(163, 205, 235).
Aa
Black text reads best on this color (12.48:1).
About this color
#A3CDEB is a light, muted blue. In OKLCH its lightness is 83%, its chroma 0.061 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue Grey (#B7C9E2), ΔE 0.026 away. Black text reads best on it, at 12.48:1.
| Hue family | Blues |
| Lightness | light (83%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Light Blue Grey (#B7C9E2) |
| Black text | 12.48:1 |
| White text | 1.68:1 |
Values
| HEX | #A3CDEB |
| RGB | rgb(163, 205, 235) |
| HSL | hsl(205, 64%, 78%) |
| OKLCH | oklch(82.8% 0.061 239.5) |
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 #A3CDEB | 1.68:1 | Fails | Lc -33.5 | Non-text elements, placeholder text |
| Black text on #A3CDEB | 12.48:1 | AAA | Lc 74.1 | Content text, not long reading |
| #A3CDEB text on white | 1.68:1 | Fails | Lc 29.8 | Dividers and decoration only |
| #A3CDEB text on black | 12.48:1 | AAA | Lc -73.1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDEE
oklch(88.6% 0.034 239.9)
-
Step 300
300 (this color)
#A3CDEB
oklch(82.8% 0.061 239.5)
-
Step 400
400
#63A9D7
oklch(70.7% 0.098 239)
-
Step 500
500
#2F92CD
oklch(63.1% 0.126 239.9)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#074668
oklch(37.6% 0.082 239.9)
-
Step 950
950
#09293D
oklch(26.9% 0.052 240.5)
#A3CDEB 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) | #C0CCED | 0.036 |
| Deuteranopia (no green cones) | #B6C4EB | 0.032 |
| Tritanopia (no blue cones) | #8DD5D7 | 0.048 |
| Achromatopsia (no color) | #C8C8C8 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3CDEB
#A3CDEB
oklch(82.8% 0.061 239.5)
- #E5BE9F
#E5BE9F
oklch(82.8% 0.061 60.3)
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 #A3CDEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue Grey #B7C9E2 ΔE 0.026
- Baby Blue #A2CFFE ΔE 0.026
- Light Steel Blue #B0C4DE ΔE 0.027
- Sky Blue #87CEEB ΔE 0.030
- Cloudy Blue #ACC2D9 ΔE 0.033
- Light Sky Blue #87CEFA ΔE 0.034
- Light Blue #ADD8E6 ΔE 0.036
- Light Cornflower Blue #98C1D9 ΔE 0.040
Use #A3CDEB 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.