#81A5FC
Closest named color: Periwinkle Blue (#8F99FB). oklch(73.2% 0.133 266.1), rgb(129, 165, 252).
Aa
Black text reads best on this color (8.72:1).
About this color
#81A5FC is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.133 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.033 away. Black text reads best on it, at 8.72:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #81A5FC |
| RGB | rgb(129, 165, 252) |
| HSL | hsl(222, 95%, 75%) |
| OKLCH | oklch(73.2% 0.133 266.1) |
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 #81A5FC | 2.40:1 | Fails | Lc -52.3 | Large or bold text, headings |
| Black text on #81A5FC | 8.72:1 | AAA | Lc 56.7 | Large or bold text, headings |
| #81A5FC text on white | 2.40:1 | Fails | Lc 47.3 | Large or bold text, headings |
| #81A5FC text on black | 8.72:1 | AAA | Lc -54.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9F9
oklch(88.5% 0.047 266.7)
-
Step 300
300
#A8C0F7
oklch(80.9% 0.083 266.3)
-
Step 400
400 (this color)
#81A5FC
oklch(73.2% 0.133 266.1)
-
Step 500
500
#5982EF
oklch(63.1% 0.17 266.2)
-
Step 600
600
#4069DE
oklch(55.7% 0.185 266)
-
Step 700
700
#3356C0
oklch(49.1% 0.171 266.3)
-
Step 800
800
#2A479C
oklch(42.7% 0.143 266.2)
-
Step 900
900
#263D7C
oklch(37.8% 0.111 266.1)
-
Step 950
950
#162448
oklch(26.9% 0.07 265.9)
#81A5FC 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) | #84ADFF | 0.021 |
| Deuteranopia (no green cones) | #76A2FA | 0.016 |
| Tritanopia (no blue cones) | #4CB8C5 | 0.120 |
| Achromatopsia (no color) | #A7A7A7 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A5FC
#81A5FC
oklch(73.2% 0.133 266.1)
- #CDA132
#CDA132
oklch(73.1% 0.133 86)
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 #81A5FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.033
- Carolina Blue #8AB8FE ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.065
- Lavender Blue #8B88F8 ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.078
- Pastel Blue #A2BFFE ΔE 0.084
- Soft Blue #6488EA ΔE 0.088
Use #81A5FC 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.