#858BA3
Closest named color: Silver Lake Blue (#778DA9). oklch(64% 0.037 274.3), rgb(133, 139, 163).
Aa
Black text reads best on this color (6.21:1).
About this color
#858BA3 is a medium-light, muted blue. In OKLCH its lightness is 64%, its chroma 0.037 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.020 away. Black text reads best on it, at 6.21:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.21:1 |
| White text | 3.37:1 |
Values
| HEX | #858BA3 |
| RGB | rgb(133, 139, 163) |
| HSL | hsl(228, 14%, 58%) |
| OKLCH | oklch(64% 0.037 274.3) |
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 #858BA3 | 3.37:1 | AA large text | Lc -66.7 | Content text, not long reading |
| Black text on #858BA3 | 6.21:1 | AA | Lc 42.8 | Non-text elements, placeholder text |
| #858BA3 text on white | 3.37:1 | AA large text | Lc 61.2 | Content text, not long reading |
| #858BA3 text on black | 6.21:1 | AA | Lc -40.4 | 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
#E9EAED
oklch(93.7% 0.004 271.4)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BDC0CD
oklch(80.9% 0.018 275.6)
-
Step 400
400
#9BA0B3
oklch(70.8% 0.028 273.9)
-
Step 500
500 (this color)
#858BA3
oklch(64% 0.037 274.3)
-
Step 600
600
#6C728B
oklch(55.6% 0.039 274.5)
-
Step 700
700
#5A5F76
oklch(49% 0.037 275.3)
-
Step 800
800
#4A4E60
oklch(42.7% 0.03 275.2)
-
Step 900
900
#3D414F
oklch(37.7% 0.025 272.6)
-
Step 950
950
#24262E
oklch(27% 0.015 274.3)
#858BA3 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) | #848DA4 | 0.005 |
| Deuteranopia (no green cones) | #828BA2 | 0.005 |
| Tritanopia (no blue cones) | #7E8F93 | 0.032 |
| Achromatopsia (no color) | #8C8C8C | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #858BA3
#858BA3
oklch(64% 0.037 274.3)
- #938C73
#938C73
oklch(63.9% 0.037 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 #858BA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.020
- Blue Grey #758DA3 ΔE 0.022
- Light Slate Gray #778899 ΔE 0.026
- Lavender Gray #7E7F9A ΔE 0.036
- Steel #738595 ΔE 0.037
- Purpley Grey #947E94 ΔE 0.040
- Cool Gray #8D99AE ΔE 0.041
- English Lavender #9D8189 ΔE 0.050
Use #858BA3 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.