#A3D3EF
Closest named color: Light Blue (#ADD8E6). oklch(84.3% 0.064 234.1), rgb(163, 211, 239).
Aa
Black text reads best on this color (13.12:1).
About this color
#A3D3EF is a light, muted blue. In OKLCH its lightness is 84%, its chroma 0.064 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.024 away. Black text reads best on it, at 13.12:1.
| Hue family | Blues |
| Lightness | light (84%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 13.12:1 |
| White text | 1.60:1 |
Values
| HEX | #A3D3EF |
| RGB | rgb(163, 211, 239) |
| HSL | hsl(202, 70%, 79%) |
| OKLCH | oklch(84.3% 0.064 234.1) |
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 #A3D3EF | 1.60:1 | Fails | Lc -30.5 | Non-text elements, placeholder text |
| Black text on #A3D3EF | 13.12:1 | AAA | Lc 76.7 | Fine for body text |
| #A3D3EF text on white | 1.60:1 | Fails | Lc 27.0 | Dividers and decoration only |
| #A3D3EF text on black | 13.12:1 | AAA | Lc -75.9 | Fine for body text |
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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DFECF4
oklch(93.6% 0.018 234.5)
-
Step 200
200
#C3DEED
oklch(88.5% 0.035 232.1)
-
Step 300
300 (this color)
#A3D3EF
oklch(84.3% 0.064 234.1)
-
Step 400
400
#5AABD6
oklch(70.7% 0.101 233.9)
-
Step 500
500
#0C95CC
oklch(63.2% 0.13 234.2)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#032A3D
oklch(27% 0.054 235.3)
#A3D3EF 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) | #C6D1F0 | 0.043 |
| Deuteranopia (no green cones) | #BBC9EF | 0.037 |
| Tritanopia (no blue cones) | #8ADBDC | 0.048 |
| Achromatopsia (no color) | #CCCCCC | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3D3EF
#A3D3EF
oklch(84.3% 0.064 234.1)
- #EDC1A5
#EDC1A5
oklch(84.3% 0.063 54.1)
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 #A3D3EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.024
- Baby Blue #A2CFFE ΔE 0.027
- Light Blue Grey #B7C9E2 ΔE 0.033
- Sky Blue #87CEEB ΔE 0.035
- Celeste #A8DADC ΔE 0.038
- Light Sky Blue #87CEFA ΔE 0.038
- Light Steel Blue #B0C4DE ΔE 0.040
- Powder Blue #B0E0E6 ΔE 0.045
Use #A3D3EF 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.