#818FAE
Closest named color: Silver Lake Blue (#778DA9). oklch(65% 0.049 265.9), rgb(129, 143, 174).
Aa
Black text reads best on this color (6.47:1).
About this color
#818FAE is a medium-light, muted blue. In OKLCH its lightness is 65%, its chroma 0.049 and its hue 266°. 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 6.47:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.47:1 |
| White text | 3.24:1 |
Values
| HEX | #818FAE |
| RGB | rgb(129, 143, 174) |
| HSL | hsl(221, 22%, 59%) |
| OKLCH | oklch(65% 0.049 265.9) |
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 #818FAE | 3.24:1 | AA large text | Lc -65.2 | Content text, not long reading |
| Black text on #818FAE | 6.47:1 | AA | Lc 44.3 | Non-text elements, placeholder text |
| #818FAE text on white | 3.24:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #818FAE text on black | 6.47:1 | AA | Lc -42.0 | 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
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#B9C1D1
oklch(81% 0.024 264.4)
-
Step 400
400
#95A1B9
oklch(70.8% 0.038 264.3)
-
Step 500
500 (this color)
#818FAE
oklch(65% 0.049 265.9)
-
Step 600
600
#657393
oklch(55.6% 0.053 266.3)
-
Step 700
700
#53607E
oklch(49% 0.051 266.3)
-
Step 800
800
#444F66
oklch(42.7% 0.041 264.8)
-
Step 900
900
#394153
oklch(37.6% 0.033 266.1)
-
Step 950
950
#222631
oklch(27% 0.021 269.3)
#818FAE 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) | #8591AF | 0.008 |
| Deuteranopia (no green cones) | #818DAD | 0.005 |
| Tritanopia (no blue cones) | #759599 | 0.044 |
| Achromatopsia (no color) | #8F8F8F | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818FAE
#818FAE
oklch(65% 0.049 265.9)
- #9D8D6D
#9D8D6D
oklch(64.9% 0.049 84.4)
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 #818FAE, 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 0.024
- Cool Gray #8D99AE ΔE 0.034
- Light Slate Gray #778899 ΔE 0.037
- Faded Blue #658CBB ΔE 0.042
- Lavender Gray #7E7F9A ΔE 0.047
- Steel #738595 ΔE 0.048
- Greyblue #77A1B5 ΔE 0.049
Use #818FAE 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.