#3B4E68
Closest named color: Dark Grey Blue (#29465B). oklch(41.9% 0.05 256.4), rgb(59, 78, 104).
Aa
White text reads best on this color (8.48:1).
About this color
#3B4E68 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.050 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.041 away. White text reads best on it, at 8.48:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.47:1 |
| White text | 8.48:1 |
Values
| HEX | #3B4E68 |
| RGB | rgb(59, 78, 104) |
| HSL | hsl(215, 28%, 32%) |
| OKLCH | oklch(41.9% 0.05 256.4) |
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 #3B4E68 | 8.48:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #3B4E68 | 2.47:1 | Fails | Lc 14.8 | Not readable |
| #3B4E68 text on white | 8.48:1 | AAA | Lc 89.2 | Fine for body text |
| #3B4E68 text on black | 2.47:1 | Fails | Lc -13.1 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B5C2D4
oklch(81% 0.029 256.5)
-
Step 400
400
#8EA2BE
oklch(70.6% 0.047 256.8)
-
Step 500
500
#728BAE
oklch(63% 0.06 256.8)
-
Step 600
600
#5A7599
oklch(55.6% 0.065 255.8)
-
Step 700
700
#4A6283
oklch(49.1% 0.061 256.5)
-
Step 800
800 (this color)
#3B4E68
oklch(41.9% 0.05 256.4)
-
Step 900
900
#344356
oklch(37.8% 0.038 254.6)
-
Step 950
950
#1F2732
oklch(27% 0.024 256.4)
#3B4E68 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) | #444F69 | 0.014 |
| Deuteranopia (no green cones) | #3F4B67 | 0.010 |
| Tritanopia (no blue cones) | #2B5457 | 0.044 |
| Achromatopsia (no color) | #4D4D4D | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4E68
#3B4E68
oklch(41.9% 0.05 256.4)
- #5C492D
#5C492D
oklch(41.8% 0.049 76.4)
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 #3B4E68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.041
- YInMn Blue #415A77 ΔE 0.041
- Dark Slate Gray #2F4F4F ΔE 0.048
- Charcoal #264653 ΔE 0.051
- Dusty Grape #545775 ΔE 0.051
- Dusk #4E5481 ΔE 0.053
- Light Navy #155084 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.056
Use #3B4E68 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.