#81A3BB
Closest named color: Bluegrey (#85A3B2). oklch(69.9% 0.051 239.2), rgb(129, 163, 187).
Aa
Black text reads best on this color (7.88:1).
About this color
#81A3BB is a medium-light, muted blue. In OKLCH its lightness is 70%, its chroma 0.051 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegrey (#85A3B2), ΔE 0.014 away. Black text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Bluegrey (#85A3B2) |
| Black text | 7.88:1 |
| White text | 2.66:1 |
Values
| HEX | #81A3BB |
| RGB | rgb(129, 163, 187) |
| HSL | hsl(205, 30%, 62%) |
| OKLCH | oklch(69.9% 0.051 239.2) |
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 #81A3BB | 2.66:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #81A3BB | 7.88:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #81A3BB text on white | 2.66:1 | Fails | Lc 51.8 | Large or bold text, headings |
| #81A3BB text on black | 7.88:1 | AAA | Lc -50.1 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AEC4D4
oklch(80.9% 0.033 239.5)
-
Step 400
400 (this color)
#81A3BB
oklch(69.9% 0.051 239.2)
-
Step 500
500
#648FAD
oklch(63% 0.065 239.6)
-
Step 600
600
#4A7999
oklch(55.6% 0.072 239.6)
-
Step 700
700
#3B6683
oklch(49.2% 0.067 239.6)
-
Step 800
800
#31536A
oklch(42.6% 0.055 239.5)
-
Step 900
900
#2C4556
oklch(37.8% 0.042 239.1)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#81A3BB 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) | #99A2BC | 0.031 |
| Deuteranopia (no green cones) | #919CBB | 0.027 |
| Tritanopia (no blue cones) | #6FA9AB | 0.040 |
| Achromatopsia (no color) | #9F9F9F | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A3BB
#81A3BB
oklch(69.9% 0.051 239.2)
- #B7977E
#B7977E
oklch(69.9% 0.052 59.8)
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 #81A3BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegrey #85A3B2 ΔE 0.014
- Greyblue #77A1B5 ΔE 0.016
- Bluey Grey #89A0B0 ΔE 0.017
- Cool Gray #8D99AE ΔE 0.030
- Cool Steel #97A7B3 ΔE 0.034
- Cool Grey #95A3A6 ΔE 0.038
- Pewter #96A8A1 ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.059
Use #81A3BB 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.