#8187AA
Closest named color: Silver Lake Blue (#778DA9). oklch(63.1% 0.053 277.2), rgb(129, 135, 170).
Aa
Black text reads best on this color (5.97:1).
About this color
#8187AA is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.053 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.021 away. Black text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #8187AA |
| RGB | rgb(129, 135, 170) |
| HSL | hsl(231, 19%, 59%) |
| OKLCH | oklch(63.1% 0.053 277.2) |
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 #8187AA | 3.51:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #8187AA | 5.97:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #8187AA text on white | 3.51:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #8187AA text on black | 5.97:1 | AA | Lc -39.0 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EF
oklch(93.5% 0.008 278.6)
-
Step 200
200
#D6D8E3
oklch(88.4% 0.015 277.8)
-
Step 300
300
#BCBFD2
oklch(80.8% 0.027 278.6)
-
Step 400
400
#9A9FBB
oklch(70.8% 0.041 277.3)
-
Step 500
500 (this color)
#8187AA
oklch(63.1% 0.053 277.2)
-
Step 600
600
#6A7095
oklch(55.4% 0.058 277.2)
-
Step 700
700
#595E7F
oklch(49.1% 0.053 277.6)
-
Step 800
800
#494D67
oklch(42.7% 0.043 277.6)
-
Step 900
900
#3D4054
oklch(37.7% 0.034 278)
-
Step 950
950
#242631
oklch(27.1% 0.021 276.9)
#8187AA 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) | #7D8AAC | 0.009 |
| Deuteranopia (no green cones) | #7B87A9 | 0.009 |
| Tritanopia (no blue cones) | #778D93 | 0.047 |
| Achromatopsia (no color) | #898989 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8187AA
#8187AA
oklch(63.1% 0.053 277.2)
- #928A65
#928A65
oklch(63.1% 0.053 97.4)
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 #8187AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.021
- Blue Grey #758DA3 ΔE 0.027
- Lavender Gray #7E7F9A ΔE 0.029
- Light Slate Gray #778899 ΔE 0.032
- Steel #738595 ΔE 0.039
- Faded Blue #658CBB ΔE 0.041
- Purpley Grey #947E94 ΔE 0.042
- Slate Gray #708090 ΔE 0.049
Use #8187AA 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.