#81AACC
Closest named color: Bluegrey (#85A3B2). oklch(72.1% 0.067 243.9), rgb(129, 170, 204).
Aa
Black text reads best on this color (8.55:1).
About this color
#81AACC is a medium-light, muted blue. In OKLCH its lightness is 72%, its chroma 0.067 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegrey (#85A3B2), ΔE 0.037 away. Black text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Bluegrey (#85A3B2) |
| Black text | 8.55:1 |
| White text | 2.45:1 |
Values
| HEX | #81AACC |
| RGB | rgb(129, 170, 204) |
| HSL | hsl(207, 42%, 65%) |
| OKLCH | oklch(72.1% 0.067 243.9) |
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 #81AACC | 2.45:1 | Fails | Lc -53.3 | Large or bold text, headings |
| Black text on #81AACC | 8.55:1 | AAA | Lc 55.8 | Large or bold text, headings |
| #81AACC text on white | 2.45:1 | Fails | Lc 48.2 | Large or bold text, headings |
| #81AACC text on black | 8.55:1 | AAA | Lc -53.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DA
oklch(80.9% 0.041 244.9)
-
Step 400
400 (this color)
#81AACC
oklch(72.1% 0.067 243.9)
-
Step 500
500
#5B8FB9
oklch(63.1% 0.085 244.1)
-
Step 600
600
#3F79A6
oklch(55.7% 0.093 244)
-
Step 700
700
#30668E
oklch(49.2% 0.086 243.3)
-
Step 800
800
#295373
oklch(42.7% 0.071 243.6)
-
Step 900
900
#26455D
oklch(37.8% 0.055 243.4)
-
Step 950
950
#172836
oklch(26.9% 0.035 244.4)
#81AACC 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) | #9CAACE | 0.034 |
| Deuteranopia (no green cones) | #92A2CB | 0.028 |
| Tritanopia (no blue cones) | #67B2B5 | 0.055 |
| Achromatopsia (no color) | #A5A5A5 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81AACC
#81AACC
oklch(72.1% 0.067 243.9)
- #C39C79
#C39C79
oklch(72% 0.067 63.4)
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 #81AACC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegrey #85A3B2 ΔE 0.037
- Greyblue #77A1B5 ΔE 0.040
- Cool Steel #97A7B3 ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.042
- Cool Gray #8D99AE ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.056
- Light Grey Blue #9DBCD4 ΔE 0.063
- Pewter #96A8A1 ΔE 0.064
Use #81AACC 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.