#3F4468
Closest named color: Dark Grey Blue (#29465B). oklch(39.8% 0.061 277.2), rgb(63, 68, 104).
Aa
White text reads best on this color (9.38:1).
About this color
#3F4468 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.061 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.040 away. White text reads best on it, at 9.38:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.23:1 |
| White text | 9.38:1 |
Values
| HEX | #3F4468 |
| RGB | rgb(63, 68, 104) |
| HSL | hsl(233, 25%, 33%) |
| OKLCH | oklch(39.8% 0.061 277.2) |
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 #3F4468 | 9.38:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #3F4468 | 2.23:1 | Fails | Lc 12.3 | Not readable |
| #3F4468 text on white | 9.38:1 | AAA | Lc 91.6 | Preferred for body text |
| #3F4468 text on black | 2.23:1 | Fails | Lc -10.7 | 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 900.
-
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
#B9BFDF
oklch(81% 0.046 277)
-
Step 400
400
#959DCF
oklch(70.8% 0.074 277.3)
-
Step 500
500
#7B84C2
oklch(63.1% 0.094 277)
-
Step 600
600
#656DAE
oklch(55.7% 0.101 277.2)
-
Step 700
700
#545B96
oklch(49.2% 0.094 277.2)
-
Step 800
800
#444A79
oklch(42.6% 0.078 277)
-
Step 900
900 (this color)
#3F4468
oklch(39.8% 0.061 277.2)
-
Step 950
950
#222539
oklch(27.1% 0.037 277)
#3F4468 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) | #384869 | 0.015 |
| Deuteranopia (no green cones) | #364567 | 0.014 |
| Tritanopia (no blue cones) | #334B51 | 0.054 |
| Achromatopsia (no color) | #464646 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F4468
#3F4468
oklch(39.8% 0.061 277.2)
- #50471E
#50471E
oklch(39.7% 0.06 97.1)
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 #3F4468, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.061
- Light Navy #155084 ΔE 0.062
- Dusk #4E5481 ΔE 0.063
- Charcoal Grey #3C4142 ΔE 0.065
- YInMn Blue #415A77 ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.067
Use #3F4468 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.