#A3D3EE
Closest named color: Light Blue (#ADD8E6). oklch(84.2% 0.063 233.1), rgb(163, 211, 238).
Aa
Black text reads best on this color (13.10:1).
About this color
#A3D3EE is a light, muted blue. In OKLCH its lightness is 84%, its chroma 0.063 and its hue 233°. 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 13.10:1.
| Hue family | Blues |
| Lightness | light (84%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 13.10:1 |
| White text | 1.60:1 |
Values
| HEX | #A3D3EE |
| RGB | rgb(163, 211, 238) |
| HSL | hsl(202, 69%, 79%) |
| OKLCH | oklch(84.2% 0.063 233.1) |
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 #A3D3EE | 1.60:1 | Fails | Lc -30.6 | Non-text elements, placeholder text |
| Black text on #A3D3EE | 13.10:1 | AAA | Lc 76.7 | Fine for body text |
| #A3D3EE text on white | 1.60:1 | Fails | Lc 27.1 | Dividers and decoration only |
| #A3D3EE text on black | 13.10:1 | 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)
#A3D3EE
oklch(84.2% 0.063 233.1)
-
Step 400
400
#5AABD5
oklch(70.7% 0.1 233.3)
-
Step 500
500
#0D95CA
oklch(63.1% 0.128 233.2)
-
Step 600
600
#007DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#032A3C
oklch(26.9% 0.053 233.9)
#A3D3EE 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) | #C6D1EF | 0.043 |
| Deuteranopia (no green cones) | #BCC9EE | 0.038 |
| Tritanopia (no blue cones) | #8BDADB | 0.046 |
| Achromatopsia (no color) | #CCCCCC | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3D3EE
#A3D3EE
oklch(84.2% 0.063 233.1)
- #EDC1A6
#EDC1A6
oklch(84.3% 0.062 53.2)
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 #A3D3EE, 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 0.028
- Light Blue Grey #B7C9E2 ΔE 0.033
- Sky Blue #87CEEB ΔE 0.035
- Celeste #A8DADC ΔE 0.037
- Light Sky Blue #87CEFA ΔE 0.039
- Light Steel Blue #B0C4DE ΔE 0.040
- Powder Blue #B0E0E6 ΔE 0.044
Use #A3D3EE 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.