#A3C4EF
Closest named color: Light Steel Blue (#B0C4DE). oklch(81.1% 0.071 255.2), rgb(163, 196, 239).
Aa
Black text reads best on this color (11.69:1).
About this color
#A3C4EF is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.071 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Steel Blue (#B0C4DE), ΔE 0.028 away. Black text reads best on it, at 11.69:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Light Steel Blue (#B0C4DE) |
| Black text | 11.69:1 |
| White text | 1.79:1 |
Values
| HEX | #A3C4EF |
| RGB | rgb(163, 196, 239) |
| HSL | hsl(214, 70%, 79%) |
| OKLCH | oklch(81.1% 0.071 255.2) |
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 #A3C4EF | 1.79:1 | Fails | Lc -37.3 | Non-text elements, placeholder text |
| Black text on #A3C4EF | 11.69:1 | AAA | Lc 70.6 | Content text, not long reading |
| #A3C4EF text on white | 1.79:1 | Fails | Lc 33.2 | Non-text elements, placeholder text |
| #A3C4EF text on black | 11.69:1 | AAA | Lc -69.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C8DBF3
oklch(88.5% 0.039 254.3)
-
Step 300
300 (this color)
#A3C4EF
oklch(81.1% 0.071 255.2)
-
Step 400
400
#6FA3E6
oklch(70.7% 0.113 255.2)
-
Step 500
500
#478BDF
oklch(63.2% 0.145 255)
-
Step 600
600
#2673CC
oklch(55.7% 0.156 254.9)
-
Step 700
700
#1860B1
oklch(49.2% 0.146 255)
-
Step 800
800
#174E8F
oklch(42.6% 0.121 255.3)
-
Step 900
900
#1A4272
oklch(37.7% 0.094 254.8)
-
Step 950
950
#102743
oklch(27% 0.06 254.6)
#A3C4EF 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) | #B5C6F1 | 0.024 |
| Deuteranopia (no green cones) | #ACBEEE | 0.018 |
| Tritanopia (no blue cones) | #8CCDD2 | 0.062 |
| Achromatopsia (no color) | #C1C1C1 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3C4EF
#A3C4EF
oklch(81.1% 0.071 255.2)
- #DCBB8E
#DCBB8E
oklch(81% 0.071 75.1)
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 #A3C4EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Steel Blue #B0C4DE ΔE 0.028
- Pastel Blue #A2BFFE ΔE 0.029
- Baby Blue #A2CFFE ΔE 0.031
- Cloudy Blue #ACC2D9 ΔE 0.031
- Light Cornflower Blue #98C1D9 ΔE 0.035
- Light Blue Grey #B7C9E2 ΔE 0.036
- Light Sky Blue #87CEFA ΔE 0.037
- Sky #82CAFC ΔE 0.038
Use #A3C4EF 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.