#818CBD
Closest named color: Silver Lake Blue (#778DA9). oklch(65% 0.074 274.4), rgb(129, 140, 189).
Aa
Black text reads best on this color (6.41:1).
About this color
#818CBD is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.074 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.035 away. Black text reads best on it, at 6.41:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #818CBD |
| RGB | rgb(129, 140, 189) |
| HSL | hsl(229, 31%, 62%) |
| OKLCH | oklch(65% 0.074 274.4) |
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 #818CBD | 3.27:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #818CBD | 6.41:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #818CBD text on white | 3.27:1 | AA large text | Lc 60.0 | Content text, not long reading |
| #818CBD text on black | 6.41:1 | AA | Lc -41.7 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#B9BFD9
oklch(80.8% 0.037 275.2)
-
Step 400
400
#959EC6
oklch(70.6% 0.059 274.9)
-
Step 500
500 (this color)
#818CBD
oklch(65% 0.074 274.4)
-
Step 600
600
#6570A3
oklch(55.7% 0.08 274.2)
-
Step 700
700
#545D8C
oklch(49.1% 0.076 275)
-
Step 800
800
#444C71
oklch(42.6% 0.062 274.1)
-
Step 900
900
#3A405C
oklch(37.8% 0.049 274.5)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#818CBD 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) | #7D91BF | 0.014 |
| Deuteranopia (no green cones) | #798CBC | 0.011 |
| Tritanopia (no blue cones) | #71959D | 0.066 |
| Achromatopsia (no color) | #8E8E8E | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818CBD
#818CBD
oklch(65% 0.074 274.4)
- #9E8F59
#9E8F59
oklch(65.1% 0.075 94.4)
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 #818CBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.035
- Faded Blue #658CBB ΔE 0.036
- Blue Grey #758DA3 ΔE 0.045
- Cool Gray #8D99AE ΔE 0.052
- Heather #A484AC ΔE 0.056
- Lavender Gray #7E7F9A ΔE 0.057
- Light Slate Gray #778899 ΔE 0.057
- Dusty Blue #5A86AD ΔE 0.059
Use #818CBD 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.