#81A4E7
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.9% 0.106 262.8), rgb(129, 164, 231).
Aa
Black text reads best on this color (8.39:1).
About this color
#81A4E7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.106 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.049 away. Black text reads best on it, at 8.39:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.39:1 |
| White text | 2.50:1 |
Values
| HEX | #81A4E7 |
| RGB | rgb(129, 164, 231) |
| HSL | hsl(219, 68%, 71%) |
| OKLCH | oklch(71.9% 0.106 262.8) |
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 #81A4E7 | 2.50:1 | Fails | Lc -54.1 | Large or bold text, headings |
| Black text on #81A4E7 | 8.39:1 | AAA | Lc 55.0 | Large or bold text, headings |
| #81A4E7 text on white | 2.50:1 | Fails | Lc 49.0 | Large or bold text, headings |
| #81A4E7 text on black | 8.39:1 | AAA | Lc -53.0 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#AAC1EC
oklch(80.8% 0.066 262.8)
-
Step 400
400 (this color)
#81A4E7
oklch(71.9% 0.106 262.8)
-
Step 500
500
#5D87DB
oklch(63.1% 0.135 263)
-
Step 600
600
#436FC8
oklch(55.6% 0.147 262.8)
-
Step 700
700
#355CAD
oklch(49% 0.137 263)
-
Step 800
800
#2C4C8C
oklch(42.7% 0.113 262.6)
-
Step 900
900
#284070
oklch(37.8% 0.088 262.8)
-
Step 950
950
#172642
oklch(27.1% 0.056 262)
#81A4E7 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) | #8CA9EA | 0.020 |
| Deuteranopia (no green cones) | #819FE6 | 0.013 |
| Tritanopia (no blue cones) | #5BB2BC | 0.094 |
| Achromatopsia (no color) | #A4A4A4 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A4E7
#81A4E7
oklch(71.9% 0.106 262.8)
- #C59E51
#C59E51
oklch(71.9% 0.106 82.6)
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 #81A4E7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.049
- Cornflower Blue #6495ED ΔE 0.057
- Carolina Blue #8AB8FE ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.064
- Greyblue #77A1B5 ΔE 0.076
- Chefchaouen Blue #4895EF ΔE 0.077
- Bluegrey #85A3B2 ΔE 0.079
- Bluey Grey #89A0B0 ΔE 0.080
Use #81A4E7 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.