#384A66
Closest named color: Dark Grey Blue (#29465B). oklch(40.6% 0.053 259), rgb(56, 74, 102).
Aa
White text reads best on this color (8.97:1).
About this color
#384A66 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.053 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.030 away. White text reads best on it, at 8.97:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #384A66 |
| RGB | rgb(56, 74, 102) |
| HSL | hsl(217, 29%, 31%) |
| OKLCH | oklch(40.6% 0.053 259) |
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 #384A66 | 8.97:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #384A66 | 2.33:1 | Fails | Lc 13.4 | Not readable |
| #384A66 text on white | 8.97:1 | AAA | Lc 90.6 | Preferred for body text |
| #384A66 text on black | 2.33:1 | Fails | Lc -11.7 | 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 800.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B5C2D5
oklch(81% 0.03 257.8)
-
Step 400
400
#8EA2C0
oklch(70.7% 0.05 258.4)
-
Step 500
500
#738BB0
oklch(63.2% 0.062 258.9)
-
Step 600
600
#5B749C
oklch(55.6% 0.069 259.6)
-
Step 700
700
#4B6285
oklch(49.2% 0.063 258.6)
-
Step 800
800 (this color)
#384A66
oklch(40.6% 0.053 259)
-
Step 900
900
#344258
oklch(37.6% 0.042 259.3)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#384A66 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) | #404C67 | 0.014 |
| Deuteranopia (no green cones) | #3B4765 | 0.009 |
| Tritanopia (no blue cones) | #275054 | 0.046 |
| Achromatopsia (no color) | #494949 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #384A66
#384A66
oklch(40.6% 0.053 259)
- #594627
#594627
oklch(40.7% 0.053 78.7)
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 #384A66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.030
- Charcoal #264653 ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.049
- YInMn Blue #415A77 ΔE 0.054
- Light Navy #155084 ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.060
- Deep Teal #00555A ΔE 0.061
Use #384A66 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.