#818BAE
Closest named color: Silver Lake Blue (#778DA9). oklch(64.1% 0.054 272.4), rgb(129, 139, 174).
Aa
Black text reads best on this color (6.23:1).
About this color
#818BAE is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.054 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.017 away. Black text reads best on it, at 6.23:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.23:1 |
| White text | 3.36:1 |
Values
| HEX | #818BAE |
| RGB | rgb(129, 139, 174) |
| HSL | hsl(227, 22%, 59%) |
| OKLCH | oklch(64.1% 0.054 272.4) |
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 #818BAE | 3.36:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #818BAE | 6.23:1 | AA | Lc 42.9 | Non-text elements, placeholder text |
| #818BAE text on white | 3.36:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #818BAE text on black | 6.23:1 | AA | Lc -40.6 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D6D9E3
oklch(88.6% 0.014 272.7)
-
Step 300
300
#BAC0D2
oklch(80.9% 0.026 271.1)
-
Step 400
400
#979FBC
oklch(70.6% 0.043 273.1)
-
Step 500
500 (this color)
#818BAE
oklch(64.1% 0.054 272.4)
-
Step 600
600
#677196
oklch(55.5% 0.059 272.6)
-
Step 700
700
#565F80
oklch(49.1% 0.054 272.5)
-
Step 800
800
#464E68
oklch(42.8% 0.045 271.2)
-
Step 900
900
#3B4155
oklch(37.8% 0.035 271.6)
-
Step 950
950
#232632
oklch(27.1% 0.023 273.8)
#818BAE 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) | #818EB0 | 0.008 |
| Deuteranopia (no green cones) | #7D8AAD | 0.007 |
| Tritanopia (no blue cones) | #769297 | 0.048 |
| Achromatopsia (no color) | #8C8C8C | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818BAE
#818BAE
oklch(64.1% 0.054 272.4)
- #988C67
#988C67
oklch(64.1% 0.054 92.2)
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 #818BAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.017
- Blue Grey #758DA3 ΔE 0.026
- Light Slate Gray #778899 ΔE 0.035
- Faded Blue #658CBB ΔE 0.039
- Lavender Gray #7E7F9A ΔE 0.039
- Steel #738595 ΔE 0.044
- Cool Gray #8D99AE ΔE 0.045
- Purpley Grey #947E94 ΔE 0.049
Use #818BAE 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.