#81B2DA
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.4% 0.078 243.7), rgb(129, 178, 218).
Aa
Black text reads best on this color (9.31:1).
About this color
#81B2DA is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.078 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.047 away. Black text reads best on it, at 9.31:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.31:1 |
| White text | 2.25:1 |
Values
| HEX | #81B2DA |
| RGB | rgb(129, 178, 218) |
| HSL | hsl(207, 55%, 68%) |
| OKLCH | oklch(74.4% 0.078 243.7) |
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 #81B2DA | 2.25:1 | Fails | Lc -49.2 | Large or bold text, headings |
| Black text on #81B2DA | 9.31:1 | AAA | Lc 59.6 | Large or bold text, headings |
| #81B2DA text on white | 2.25:1 | Fails | Lc 44.4 | Non-text elements, placeholder text |
| #81B2DA text on black | 9.31:1 | AAA | Lc -57.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEA
oklch(88.6% 0.027 242.8)
-
Step 300
300
#A7C5DE
oklch(81% 0.048 243.5)
-
Step 400
400 (this color)
#81B2DA
oklch(74.4% 0.078 243.7)
-
Step 500
500
#5090C1
oklch(63.1% 0.099 243.4)
-
Step 600
600
#3179AE
oklch(55.6% 0.109 244)
-
Step 700
700
#236695
oklch(49.1% 0.1 243.5)
-
Step 800
800
#1F5379
oklch(42.6% 0.084 243.9)
-
Step 900
900
#204561
oklch(37.7% 0.064 243.6)
-
Step 950
950
#132939
oklch(27.1% 0.041 242)
#81B2DA 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) | #A1B2DC | 0.039 |
| Deuteranopia (no green cones) | #96A8D9 | 0.034 |
| Tritanopia (no blue cones) | #60BCBF | 0.065 |
| Achromatopsia (no color) | #ADADAD | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81B2DA
#81B2DA
oklch(74.4% 0.078 243.7)
- #CFA278
#CFA278
oklch(74.4% 0.078 64.2)
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 #81B2DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.052
- Carolina Blue #8AB8FE ΔE 0.054
- Cool Steel #97A7B3 ΔE 0.058
- Bluegrey #85A3B2 ΔE 0.061
- Lightblue #7BC8F6 ΔE 0.062
- Greyblue #77A1B5 ΔE 0.065
- Bluey Grey #89A0B0 ΔE 0.066
Use #81B2DA 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.