#81C1F9
Closest named color: Lightblue (#7BC8F6). oklch(78.9% 0.104 246), rgb(129, 193, 249).
Aa
Black text reads best on this color (10.92:1).
About this color
#81C1F9 is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.104 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Lightblue (#7BC8F6), ΔE 0.021 away. Black text reads best on it, at 10.92:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Lightblue (#7BC8F6) |
| Black text | 10.92:1 |
| White text | 1.92:1 |
Values
| HEX | #81C1F9 |
| RGB | rgb(129, 193, 249) |
| HSL | hsl(208, 91%, 74%) |
| OKLCH | oklch(78.9% 0.104 246) |
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 #81C1F9 | 1.92:1 | Fails | Lc -40.9 | Non-text elements, placeholder text |
| Black text on #81C1F9 | 10.92:1 | AAA | Lc 67.3 | Content text, not long reading |
| #81C1F9 text on white | 1.92:1 | Fails | Lc 36.6 | Non-text elements, placeholder text |
| #81C1F9 text on black | 10.92:1 | AAA | Lc -65.8 | 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
#EEF7FE
oklch(97.1% 0.013 241)
-
Step 100
100
#DAECFD
oklch(93.5% 0.03 246.6)
-
Step 200
200
#BBDEFE
oklch(88.6% 0.058 246.1)
-
Step 300
300 (this color)
#81C1F9
oklch(78.9% 0.104 246)
-
Step 400
400
#31A8FF
oklch(70.8% 0.163 245.8)
-
Step 500
500
#008FE4
oklch(63% 0.162 246)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005387
oklch(42.8% 0.11 245.8)
-
Step 900
900
#004571
oklch(37.8% 0.096 245.5)
-
Step 950
950
#002846
oklch(26.9% 0.07 246.6)
#81C1F9 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) | #AAC2FC | 0.048 |
| Deuteranopia (no green cones) | #9AB6F8 | 0.037 |
| Tritanopia (no blue cones) | #48CED4 | 0.087 |
| Achromatopsia (no color) | #BBBBBB | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81C1F9
#81C1F9
oklch(78.9% 0.104 246)
- #E8AD70
#E8AD70
oklch(79% 0.104 66.3)
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 #81C1F9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lightblue #7BC8F6 ΔE 0.021
- Sky #82CAFC ΔE 0.024
- Carolina Blue #8AB8FE ΔE 0.028
- Light Sky Blue #87CEFA ΔE 0.036
- Pastel Blue #A2BFFE ΔE 0.038
- Sky Blue #87CEEB ΔE 0.047
- Vivid Sky Blue #4CC9F0 ΔE 0.049
- Light Cornflower Blue #98C1D9 ΔE 0.051
Use #81C1F9 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.