#81A3BF
Closest named color: Bluegrey (#85A3B2). oklch(70% 0.056 243.5), rgb(129, 163, 191).
Aa
Black text reads best on this color (7.92:1).
About this color
#81A3BF is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.056 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegrey (#85A3B2), ΔE 0.020 away. Black text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Bluegrey (#85A3B2) |
| Black text | 7.92:1 |
| White text | 2.64:1 |
Values
| HEX | #81A3BF |
| RGB | rgb(129, 163, 191) |
| HSL | hsl(207, 33%, 63%) |
| OKLCH | oklch(70% 0.056 243.5) |
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 #81A3BF | 2.64:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #81A3BF | 7.92:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #81A3BF text on white | 2.64:1 | Fails | Lc 51.6 | Large or bold text, headings |
| #81A3BF text on black | 7.92:1 | AAA | Lc -50.3 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AEC4D6
oklch(80.9% 0.035 242.8)
-
Step 400
400 (this color)
#81A3BF
oklch(70% 0.056 243.5)
-
Step 500
500
#638FB2
oklch(63.2% 0.072 243.2)
-
Step 600
600
#49789D
oklch(55.5% 0.077 243.6)
-
Step 700
700
#3A6587
oklch(49.1% 0.073 243.9)
-
Step 800
800
#31536D
oklch(42.8% 0.059 242.8)
-
Step 900
900
#2B4459
oklch(37.6% 0.048 244.9)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#81A3BF 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) | #98A3C0 | 0.030 |
| Deuteranopia (no green cones) | #909CBE | 0.025 |
| Tritanopia (no blue cones) | #6DAAAC | 0.046 |
| Achromatopsia (no color) | #9F9F9F | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A3BF
#81A3BF
oklch(70% 0.056 243.5)
- #B8987B
#B8987B
oklch(70.1% 0.056 63.9)
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 #81A3BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegrey #85A3B2 ΔE 0.020
- Greyblue #77A1B5 ΔE 0.020
- Bluey Grey #89A0B0 ΔE 0.022
- Cool Gray #8D99AE ΔE 0.032
- Cool Steel #97A7B3 ΔE 0.036
- Cool Grey #95A3A6 ΔE 0.043
- Pewter #96A8A1 ΔE 0.056
- Cadet Blue #5F9EA0 ΔE 0.063
Use #81A3BF 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.