#858FB9
Closest named color: Silver Lake Blue (#778DA9). oklch(65.7% 0.064 274.1), rgb(133, 143, 185).
Aa
Black text reads best on this color (6.62:1).
About this color
#858FB9 is a medium-light, muted blue. In OKLCH its lightness is 66%, its chroma 0.064 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.032 away. Black text reads best on it, at 6.62:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.62:1 |
| White text | 3.16:1 |
Values
| HEX | #858FB9 |
| RGB | rgb(133, 143, 185) |
| HSL | hsl(228, 27%, 62%) |
| OKLCH | oklch(65.7% 0.064 274.1) |
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 #858FB9 | 3.16:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #858FB9 | 6.62:1 | AA | Lc 45.2 | Large or bold text, headings |
| #858FB9 text on white | 3.16:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #858FB9 text on black | 6.62:1 | AA | Lc -42.9 | 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
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D5D9E5
oklch(88.6% 0.017 271.2)
-
Step 300
300
#BAC0D5
oklch(81% 0.03 273)
-
Step 400
400
#979FC0
oklch(70.7% 0.049 274.4)
-
Step 500
500 (this color)
#858FB9
oklch(65.7% 0.064 274.1)
-
Step 600
600
#67709C
oklch(55.5% 0.069 275)
-
Step 700
700
#555E86
oklch(49.1% 0.065 274)
-
Step 800
800
#464D6C
oklch(42.7% 0.052 274.2)
-
Step 900
900
#3B4058
oklch(37.7% 0.042 275.1)
-
Step 950
950
#222633
oklch(27.1% 0.025 271.4)
#858FB9 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) | #8393BB | 0.011 |
| Deuteranopia (no green cones) | #7F8FB8 | 0.008 |
| Tritanopia (no blue cones) | #78979D | 0.057 |
| Achromatopsia (no color) | #919191 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #858FB9
#858FB9
oklch(65.7% 0.064 274.1)
- #9E9164
#9E9164
oklch(65.7% 0.064 93.9)
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 #858FB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.032
- Cool Gray #8D99AE ΔE 0.039
- Blue Grey #758DA3 ΔE 0.041
- Faded Blue #658CBB ΔE 0.043
- Heather #A484AC ΔE 0.051
- Light Slate Gray #778899 ΔE 0.053
- Greyblue #77A1B5 ΔE 0.054
- Bluey Grey #89A0B0 ΔE 0.054
Use #858FB9 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.