#3F486E
Closest named color: Dark Grey Blue (#29465B). oklch(41.1% 0.065 273.1), rgb(63, 72, 110).
Aa
White text reads best on this color (8.88:1).
About this color
#3F486E is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.065 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.046 away. White text reads best on it, at 8.88:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #3F486E |
| RGB | rgb(63, 72, 110) |
| HSL | hsl(229, 27%, 34%) |
| OKLCH | oklch(41.1% 0.065 273.1) |
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 #3F486E | 8.88:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3F486E | 2.36:1 | Fails | Lc 13.7 | Not readable |
| #3F486E text on white | 8.88:1 | AAA | Lc 90.3 | Preferred for body text |
| #3F486E text on black | 2.36:1 | Fails | Lc -12.0 | Not readable |
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 800.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D4D9E8
oklch(88.6% 0.021 271.2)
-
Step 300
300
#B8C0DA
oklch(81% 0.038 272)
-
Step 400
400
#949FC7
oklch(70.8% 0.06 272.8)
-
Step 500
500
#7A86B9
oklch(63% 0.078 273.8)
-
Step 600
600
#6370A5
oklch(55.7% 0.084 272.9)
-
Step 700
700
#525D8D
oklch(49% 0.078 273.3)
-
Step 800
800 (this color)
#3F486E
oklch(41.1% 0.065 273.1)
-
Step 900
900
#39405D
oklch(37.8% 0.051 273.3)
-
Step 950
950
#212536
oklch(26.9% 0.032 273.8)
#3F486E 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) | #3B4C70 | 0.012 |
| Deuteranopia (no green cones) | #37486D | 0.012 |
| Tritanopia (no blue cones) | #305056 | 0.058 |
| Achromatopsia (no color) | #4A4A4A | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F486E
#3F486E
oklch(41.1% 0.065 273.1)
- #574A1D
#574A1D
oklch(41.2% 0.065 93.2)
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 #3F486E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.046
- Dusk #4E5481 ΔE 0.051
- Light Navy #155084 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
- Twilight #4E518B ΔE 0.057
- Dusty Grape #545775 ΔE 0.058
- Dusk Blue #26538D ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.059
Use #3F486E 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.