#818BB6
Closest named color: Silver Lake Blue (#778DA9). oklch(64.5% 0.066 274.3), rgb(129, 139, 182).
Aa
Black text reads best on this color (6.30:1).
About this color
#818BB6 is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.066 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.027 away. Black text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #818BB6 |
| RGB | rgb(129, 139, 182) |
| HSL | hsl(229, 27%, 61%) |
| OKLCH | oklch(64.5% 0.066 274.3) |
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 #818BB6 | 3.33:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #818BB6 | 6.30:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #818BB6 text on white | 3.33:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #818BB6 text on black | 6.30:1 | AA | Lc -41.0 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#BAC0D6
oklch(81% 0.032 273.6)
-
Step 400
400
#969FC1
oklch(70.7% 0.051 273.4)
-
Step 500
500 (this color)
#818BB6
oklch(64.5% 0.066 274.3)
-
Step 600
600
#66709D
oklch(55.5% 0.071 274.2)
-
Step 700
700
#555E87
oklch(49.2% 0.067 274.2)
-
Step 800
800
#464D6D
oklch(42.8% 0.054 274.4)
-
Step 900
900
#3A4059
oklch(37.7% 0.044 273.7)
-
Step 950
950
#222634
oklch(27.1% 0.027 272.1)
#818BB6 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) | #7E8FB8 | 0.011 |
| Deuteranopia (no green cones) | #7A8BB5 | 0.010 |
| Tritanopia (no blue cones) | #73939A | 0.058 |
| Achromatopsia (no color) | #8D8D8D | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818BB6
#818BB6
oklch(64.5% 0.066 274.3)
- #9A8D5F
#9A8D5F
oklch(64.4% 0.065 94.2)
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 #818BB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.027
- Faded Blue #658CBB ΔE 0.035
- Blue Grey #758DA3 ΔE 0.036
- Light Slate Gray #778899 ΔE 0.047
- Lavender Gray #7E7F9A ΔE 0.047
- Cool Gray #8D99AE ΔE 0.049
- Heather #A484AC ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.055
Use #818BB6 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.