#81BBF1
Closest named color: Carolina Blue (#8AB8FE). oklch(77.3% 0.098 247.5), rgb(129, 187, 241).
Aa
Black text reads best on this color (10.31:1).
About this color
#81BBF1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.098 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Carolina Blue (#8AB8FE), ΔE 0.025 away. Black text reads best on it, at 10.31:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Carolina Blue (#8AB8FE) |
| Black text | 10.31:1 |
| White text | 2.03:1 |
Values
| HEX | #81BBF1 |
| RGB | rgb(129, 187, 241) |
| HSL | hsl(209, 80%, 73%) |
| OKLCH | oklch(77.3% 0.098 247.5) |
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 #81BBF1 | 2.03:1 | Fails | Lc -44.0 | Non-text elements, placeholder text |
| Black text on #81BBF1 | 10.31:1 | AAA | Lc 64.4 | Content text, not long reading |
| #81BBF1 text on white | 2.03:1 | Fails | Lc 39.5 | Non-text elements, placeholder text |
| #81BBF1 text on black | 10.31:1 | AAA | Lc -62.8 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DBECFC
oklch(93.5% 0.028 246.5)
-
Step 200
200
#BDDDFC
oklch(88.4% 0.055 247.6)
-
Step 300
300 (this color)
#81BBF1
oklch(77.3% 0.098 247.5)
-
Step 400
400
#3EA7FD
oklch(70.8% 0.158 247.4)
-
Step 500
500
#008EE8
oklch(63% 0.168 247.5)
-
Step 600
600
#0077C4
oklch(55.5% 0.148 247.6)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#004473
oklch(37.7% 0.1 247.4)
-
Step 950
950
#002847
oklch(27% 0.072 247.4)
#81BBF1 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) | #A5BCF4 | 0.043 |
| Deuteranopia (no green cones) | #97B1F0 | 0.034 |
| Tritanopia (no blue cones) | #50C8CD | 0.084 |
| Achromatopsia (no color) | #B6B6B6 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81BBF1
#81BBF1
oklch(77.3% 0.098 247.5)
- #DFA96F
#DFA96F
oklch(77.2% 0.098 67.5)
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 #81BBF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Carolina Blue #8AB8FE ΔE 0.025
- Lightblue #7BC8F6 ΔE 0.034
- Sky #82CAFC ΔE 0.040
- Pastel Blue #A2BFFE ΔE 0.045
- Light Cornflower Blue #98C1D9 ΔE 0.049
- Light Sky Blue #87CEFA ΔE 0.051
- Light Grey Blue #9DBCD4 ΔE 0.051
- Vivid Sky Blue #4CC9F0 ΔE 0.053
Use #81BBF1 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.