#A4C5FA
Closest named color: Pastel Blue (#A2BFFE). oklch(81.8% 0.083 259.8), rgb(164, 197, 250).
Aa
Black text reads best on this color (11.94:1).
About this color
#A4C5FA is a light, moderately saturated blue. In OKLCH its lightness is 82%, its chroma 0.083 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.019 away. Black text reads best on it, at 11.94:1.
| Hue family | Blues |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 11.94:1 |
| White text | 1.75:1 |
Values
| HEX | #A4C5FA |
| RGB | rgb(164, 197, 250) |
| HSL | hsl(217, 90%, 81%) |
| OKLCH | oklch(81.8% 0.083 259.8) |
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 #A4C5FA | 1.75:1 | Fails | Lc -36.1 | Non-text elements, placeholder text |
| Black text on #A4C5FA | 11.94:1 | AAA | Lc 71.7 | Content text, not long reading |
| #A4C5FA text on white | 1.75:1 | Fails | Lc 32.1 | Non-text elements, placeholder text |
| #A4C5FA text on black | 11.94:1 | AAA | Lc -70.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DAF8
oklch(88.4% 0.046 260.7)
-
Step 300
300 (this color)
#A4C5FA
oklch(81.8% 0.083 259.8)
-
Step 400
400
#6EA0F3
oklch(70.6% 0.134 260.1)
-
Step 500
500
#4686EF
oklch(63.1% 0.171 259.8)
-
Step 600
600
#276DDD
oklch(55.6% 0.185 259.7)
-
Step 700
700
#1A5AC0
oklch(49% 0.173 259.9)
-
Step 800
800
#184A9B
oklch(42.6% 0.143 259.9)
-
Step 900
900
#1A3F7B
oklch(37.6% 0.111 259.7)
-
Step 950
950
#102548
oklch(26.9% 0.071 260)
#A4C5FA 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) | #B3C8FC | 0.021 |
| Deuteranopia (no green cones) | #A9C0F9 | 0.014 |
| Tritanopia (no blue cones) | #8AD0D7 | 0.073 |
| Achromatopsia (no color) | #C3C3C3 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4C5FA
#A4C5FA
oklch(81.8% 0.083 259.8)
- #E0BE85
#E0BE85
oklch(81.8% 0.083 80.1)
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 #A4C5FA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.019
- Baby Blue #A2CFFE ΔE 0.025
- Sky #82CAFC ΔE 0.037
- Light Sky Blue #87CEFA ΔE 0.037
- Light Periwinkle #C1C6FC ΔE 0.037
- Light Steel Blue #B0C4DE ΔE 0.041
- Light Blue Grey #B7C9E2 ΔE 0.045
- Lightblue #7BC8F6 ΔE 0.045
Use #A4C5FA 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.