#81A5CC
Closest named color: Greyblue (#77A1B5). oklch(71% 0.07 250.8), rgb(129, 165, 204).
Aa
Black text reads best on this color (8.18:1).
About this color
#81A5CC is a medium-light, muted blue. In OKLCH its lightness is 71%, its chroma 0.070 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.037 away. Black text reads best on it, at 8.18:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.18:1 |
| White text | 2.56:1 |
Values
| HEX | #81A5CC |
| RGB | rgb(129, 165, 204) |
| HSL | hsl(211, 42%, 65%) |
| OKLCH | oklch(71% 0.07 250.8) |
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 #81A5CC | 2.56:1 | Fails | Lc -55.3 | Large or bold text, headings |
| Black text on #81A5CC | 8.18:1 | AAA | Lc 53.9 | Large or bold text, headings |
| #81A5CC text on white | 2.56:1 | Fails | Lc 50.2 | Large or bold text, headings |
| #81A5CC text on black | 8.18:1 | AAA | Lc -51.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DC
oklch(80.8% 0.043 250.6)
-
Step 400
400 (this color)
#81A5CC
oklch(71% 0.07 250.8)
-
Step 500
500
#5F8DBE
oklch(63% 0.09 250.9)
-
Step 600
600
#4577AA
oklch(55.7% 0.097 250.4)
-
Step 700
700
#376492
oklch(49.2% 0.089 250.6)
-
Step 800
800
#2E5176
oklch(42.6% 0.074 251.2)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#81A5CC 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) | #96A6CE | 0.027 |
| Deuteranopia (no green cones) | #8D9ECB | 0.023 |
| Tritanopia (no blue cones) | #68AEB2 | 0.060 |
| Achromatopsia (no color) | #A2A2A2 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #81A5CC
#81A5CC
oklch(71% 0.07 250.8)
- #BD9A71
#BD9A71
oklch(70.8% 0.07 70.8)
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 #81A5CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.037
- Bluegrey #85A3B2 ΔE 0.037
- Bluey Grey #89A0B0 ΔE 0.040
- Cool Steel #97A7B3 ΔE 0.046
- Cool Gray #8D99AE ΔE 0.047
- Cool Grey #95A3A6 ΔE 0.058
- Pewter #96A8A1 ΔE 0.070
- Dark Gray #A9A9A9 ΔE 0.074
Use #81A5CC 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.