#818FA8
Closest named color: Silver Lake Blue (#778DA9). oklch(64.8% 0.041 262.1), rgb(129, 143, 168).
Aa
Black text reads best on this color (6.42:1).
About this color
#818FA8 is a medium-light, muted blue. In OKLCH its lightness is 65%, its chroma 0.041 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.015 away. Black text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.42:1 |
| White text | 3.26:1 |
Values
| HEX | #818FA8 |
| RGB | rgb(129, 143, 168) |
| HSL | hsl(218, 18%, 58%) |
| OKLCH | oklch(64.8% 0.041 262.1) |
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 #818FA8 | 3.26:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #818FA8 | 6.42:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #818FA8 text on white | 3.26:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #818FA8 text on black | 6.42:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#BAC1CE
oklch(80.9% 0.02 263)
-
Step 400
400
#96A1B5
oklch(70.7% 0.032 262.5)
-
Step 500
500 (this color)
#818FA8
oklch(64.8% 0.041 262.1)
-
Step 600
600
#65748E
oklch(55.6% 0.044 261.4)
-
Step 700
700
#546179
oklch(49.1% 0.042 262.6)
-
Step 800
800
#454F62
oklch(42.6% 0.034 263.2)
-
Step 900
900
#3A4250
oklch(37.7% 0.026 261.6)
-
Step 950
950
#22272F
oklch(27.1% 0.017 259.8)
#818FA8 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) | #8790A9 | 0.009 |
| Deuteranopia (no green cones) | #838DA7 | 0.006 |
| Tritanopia (no blue cones) | #779497 | 0.036 |
| Achromatopsia (no color) | #8E8E8E | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818FA8
#818FA8
oklch(64.8% 0.041 262.1)
- #9B8C73
#9B8C73
oklch(64.7% 0.04 80.5)
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 #818FA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.015
- Blue Grey #758DA3 ΔE 0.019
- Light Slate Gray #778899 ΔE 0.031
- Cool Gray #8D99AE ΔE 0.034
- Steel #738595 ΔE 0.042
- Lavender Gray #7E7F9A ΔE 0.045
- Faded Blue #658CBB ΔE 0.047
- Greyblue #77A1B5 ΔE 0.048
Use #818FA8 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.