#81A1DA
Closest named color: Greyblue (#77A1B5). oklch(70.7% 0.091 261.7), rgb(129, 161, 218).
Aa
Black text reads best on this color (8.04:1).
About this color
#81A1DA is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.091 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.058 away. Black text reads best on it, at 8.04:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.04:1 |
| White text | 2.61:1 |
Values
| HEX | #81A1DA |
| RGB | rgb(129, 161, 218) |
| HSL | hsl(218, 55%, 68%) |
| OKLCH | oklch(70.7% 0.091 261.7) |
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 #81A1DA | 2.61:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #81A1DA | 8.04:1 | AAA | Lc 53.1 | Large or bold text, headings |
| #81A1DA text on white | 2.61:1 | Fails | Lc 50.9 | Large or bold text, headings |
| #81A1DA text on black | 8.04:1 | AAA | Lc -51.0 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEF
oklch(88.6% 0.032 261.7)
-
Step 300
300
#ADC1E6
oklch(80.8% 0.057 262.7)
-
Step 400
400 (this color)
#81A1DA
oklch(70.7% 0.091 261.7)
-
Step 500
500
#6189D0
oklch(63.2% 0.117 261.3)
-
Step 600
600
#4871BD
oklch(55.5% 0.127 261.7)
-
Step 700
700
#3A5FA3
oklch(49.2% 0.117 261.6)
-
Step 800
800
#304D84
oklch(42.6% 0.098 262.1)
-
Step 900
900
#2A416A
oklch(37.7% 0.076 261.3)
-
Step 950
950
#19263E
oklch(27% 0.049 262)
#81A1DA 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) | #8DA5DD | 0.020 |
| Deuteranopia (no green cones) | #839CD9 | 0.013 |
| Tritanopia (no blue cones) | #62ADB5 | 0.081 |
| Achromatopsia (no color) | #A0A0A0 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A1DA
#81A1DA
oklch(70.7% 0.091 261.7)
- #BD9B5C
#BD9B5C
oklch(70.7% 0.091 81.8)
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 #81A1DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.060
- Periwinkle Blue #8F99FB ΔE 0.061
- Bluegrey #85A3B2 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.062
- Cool Gray #8D99AE ΔE 0.063
- Perrywinkle #8F8CE7 ΔE 0.064
- Cool Steel #97A7B3 ΔE 0.070
Use #81A1DA 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.