#A1C4FB
Closest named color: Pastel Blue (#A2BFFE). oklch(81.5% 0.087 259.3), rgb(161, 196, 251).
Aa
Black text reads best on this color (11.80:1).
About this color
#A1C4FB is a light, moderately saturated blue. In OKLCH its lightness is 81%, its chroma 0.087 and its hue 259°. 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 11.80:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.80:1 |
| White text | 1.77:1 |
Values
| HEX | #A1C4FB |
| RGB | rgb(161, 196, 251) |
| HSL | hsl(217, 92%, 81%) |
| OKLCH | oklch(81.5% 0.087 259.3) |
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 #A1C4FB | 1.77:1 | Fails | Lc -36.7 | Non-text elements, placeholder text |
| Black text on #A1C4FB | 11.80:1 | AAA | Lc 71.1 | Content text, not long reading |
| #A1C4FB text on white | 1.77:1 | Fails | Lc 32.7 | Non-text elements, placeholder text |
| #A1C4FB text on black | 11.80:1 | AAA | Lc -69.9 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DBFA
oklch(88.6% 0.048 259.1)
-
Step 300
300 (this color)
#A1C4FB
oklch(81.5% 0.087 259.3)
-
Step 400
400
#6AA0F6
oklch(70.6% 0.139 259.4)
-
Step 500
500
#4186F3
oklch(63.1% 0.178 259.3)
-
Step 600
600
#1F6CE1
oklch(55.5% 0.193 259.4)
-
Step 700
700
#115AC4
oklch(49.2% 0.179 259.3)
-
Step 800
800
#124A9E
oklch(42.7% 0.148 259.2)
-
Step 900
900
#173F7E
oklch(37.8% 0.116 259.4)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#A1C4FB 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) | #B1C7FE | 0.022 |
| Deuteranopia (no green cones) | #A7BEFA | 0.016 |
| Tritanopia (no blue cones) | #84D0D7 | 0.077 |
| Achromatopsia (no color) | #C2C2C2 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A1C4FB
#A1C4FB
oklch(81.5% 0.087 259.3)
- #E1BC81
#E1BC81
oklch(81.4% 0.087 78.7)
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 #A1C4FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.015
- Baby Blue #A2CFFE ΔE 0.029
- Sky #82CAFC ΔE 0.035
- Light Sky Blue #87CEFA ΔE 0.037
- Light Periwinkle #C1C6FC ΔE 0.041
- Lightblue #7BC8F6 ΔE 0.042
- Light Steel Blue #B0C4DE ΔE 0.044
- Carolina Blue #8AB8FE ΔE 0.045
Use #A1C4FB 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.