#3F4674
Closest named color: Light Navy (#155084). oklch(41% 0.077 275.9), rgb(63, 70, 116).
Aa
White text reads best on this color (8.97:1).
About this color
#3F4674 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.077 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.050 away. White text reads best on it, at 8.97:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #3F4674 |
| RGB | rgb(63, 70, 116) |
| HSL | hsl(232, 30%, 35%) |
| OKLCH | oklch(41% 0.077 275.9) |
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 #3F4674 | 8.97:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #3F4674 | 2.33:1 | Fails | Lc 13.4 | Not readable |
| #3F4674 text on white | 8.97:1 | AAA | Lc 90.5 | Preferred for body text |
| #3F4674 text on black | 2.33:1 | Fails | Lc -11.8 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B8BFDE
oklch(80.9% 0.044 275.3)
-
Step 400
400
#949DCE
oklch(70.7% 0.072 276.3)
-
Step 500
500
#7A85C1
oklch(63.2% 0.091 275.5)
-
Step 600
600
#636DAE
oklch(55.5% 0.102 275.9)
-
Step 700
700
#525B95
oklch(49% 0.093 275.7)
-
Step 800
800 (this color)
#3F4674
oklch(41% 0.077 275.9)
-
Step 900
900
#393F62
oklch(37.9% 0.06 275.7)
-
Step 950
950
#212539
oklch(27% 0.038 274.9)
#3F4674 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) | #364B76 | 0.018 |
| Deuteranopia (no green cones) | #314773 | 0.019 |
| Tritanopia (no blue cones) | #2D4F57 | 0.068 |
| Achromatopsia (no color) | #494949 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4674
#3F4674
oklch(41% 0.077 275.9)
- #574A0D
#574A0D
oklch(41.1% 0.078 96.3)
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 #3F4674, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.051
- Dusk #4E5481 ΔE 0.051
- Twilight #4E518B ΔE 0.053
- Dusk Blue #26538D ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.054
- Twilight Blue #0A437A ΔE 0.056
- Cobalt #1E488F ΔE 0.056
Use #3F4674 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.