#383E5E
Closest named color: Dark Grey Blue (#29465B). oklch(37.3% 0.056 275.3), rgb(56, 62, 94).
Aa
White text reads best on this color (10.40:1).
About this color
#383E5E is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.056 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 10.40:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.01:1 |
| White text | 10.40:1 |
Values
| HEX | #383E5E |
| RGB | rgb(56, 62, 94) |
| HSL | hsl(231, 25%, 29%) |
| OKLCH | oklch(37.3% 0.056 275.3) |
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 #383E5E | 10.40:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #383E5E | 2.01:1 | Fails | Lc 9.8 | Not readable |
| #383E5E text on white | 10.40:1 | AAA | Lc 94.1 | Preferred for body text |
| #383E5E text on black | 2.01:1 | Fails | Lc -8.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B8BFDC
oklch(80.9% 0.042 274.7)
-
Step 400
400
#949ECB
oklch(70.7% 0.067 274.8)
-
Step 500
500
#7A85BD
oklch(63% 0.085 275.1)
-
Step 600
600
#646EA9
oklch(55.5% 0.092 275.6)
-
Step 700
700
#535C91
oklch(49.1% 0.086 275.5)
-
Step 800
800
#444B76
oklch(42.6% 0.072 275.9)
-
Step 900
900 (this color)
#383E5E
oklch(37.3% 0.056 275.3)
-
Step 950
950
#212538
oklch(27% 0.036 274.6)
#383E5E 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) | #34415F | 0.010 |
| Deuteranopia (no green cones) | #313E5D | 0.011 |
| Tritanopia (no blue cones) | #2D4449 | 0.050 |
| Achromatopsia (no color) | #404040 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383E5E
#383E5E
oklch(37.3% 0.056 275.3)
- #4A401B
#4A401B
oklch(37.3% 0.056 94.4)
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 #383E5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Charcoal #264653 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.051
- Onyx #343A40 ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.061
- Gunmetal #293241 ΔE 0.064
Use #383E5E 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.