#858CA9
Closest named color: Silver Lake Blue (#778DA9). oklch(64.5% 0.044 274.4), rgb(133, 140, 169).
Aa
Black text reads best on this color (6.32:1).
About this color
#858CA9 is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.044 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.019 away. Black text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.32:1 |
| White text | 3.32:1 |
Values
| HEX | #858CA9 |
| RGB | rgb(133, 140, 169) |
| HSL | hsl(228, 17%, 59%) |
| OKLCH | oklch(64.5% 0.044 274.4) |
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 #858CA9 | 3.32:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #858CA9 | 6.32:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #858CA9 text on white | 3.32:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #858CA9 text on black | 6.32:1 | AA | Lc -41.1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E1
oklch(88.5% 0.011 269.5)
-
Step 300
300
#BCC0CF
oklch(80.9% 0.021 274)
-
Step 400
400
#9A9FB7
oklch(70.6% 0.035 276.2)
-
Step 500
500 (this color)
#858CA9
oklch(64.5% 0.044 274.4)
-
Step 600
600
#6A7290
oklch(55.7% 0.048 273.1)
-
Step 700
700
#595F7A
oklch(49.1% 0.044 274.9)
-
Step 800
800
#494E64
oklch(42.8% 0.037 274.7)
-
Step 900
900
#3D4151
oklch(37.8% 0.028 274)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#858CA9 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) | #848EAA | 0.005 |
| Deuteranopia (no green cones) | #828CA8 | 0.005 |
| Tritanopia (no blue cones) | #7D9196 | 0.038 |
| Achromatopsia (no color) | #8D8D8D | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #858CA9
#858CA9
oklch(64.5% 0.044 274.4)
- #968E6F
#968E6F
oklch(64.5% 0.045 95.3)
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 #858CA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.019
- Blue Grey #758DA3 ΔE 0.024
- Light Slate Gray #778899 ΔE 0.033
- Cool Gray #8D99AE ΔE 0.038
- Lavender Gray #7E7F9A ΔE 0.040
- Steel #738595 ΔE 0.043
- Purpley Grey #947E94 ΔE 0.044
- Faded Blue #658CBB ΔE 0.047
Use #858CA9 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.