#383F6B
Closest named color: Dark Grey Blue (#29465B). oklch(38.3% 0.075 275.4), rgb(56, 63, 107).
Aa
White text reads best on this color (10.04:1).
About this color
#383F6B is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.075 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.044 away. White text reads best on it, at 10.04:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.09:1 |
| White text | 10.04:1 |
Values
| HEX | #383F6B |
| RGB | rgb(56, 63, 107) |
| HSL | hsl(232, 31%, 32%) |
| OKLCH | oklch(38.3% 0.075 275.4) |
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 #383F6B | 10.04:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #383F6B | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #383F6B text on white | 10.04:1 | AAA | Lc 93.2 | Preferred for body text |
| #383F6B text on black | 2.09:1 | Fails | Lc -9.3 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8EE
oklch(88.5% 0.031 275.6)
-
Step 300
300
#B6BEE6
oklch(80.9% 0.057 276.2)
-
Step 400
400
#909CD9
oklch(70.6% 0.09 275.3)
-
Step 500
500
#7683CF
oklch(63.2% 0.115 275.2)
-
Step 600
600
#5F6BBC
oklch(55.6% 0.126 275.2)
-
Step 700
700
#4F59A2
oklch(49.2% 0.117 275.4)
-
Step 800
800
#414983
oklch(42.7% 0.096 275.6)
-
Step 900
900 (this color)
#383F6B
oklch(38.3% 0.075 275.4)
-
Step 950
950
#20243E
oklch(27% 0.049 276)
#383F6B 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) | #2F446D | 0.018 |
| Deuteranopia (no green cones) | #2B406A | 0.018 |
| Tritanopia (no blue cones) | #264850 | 0.066 |
| Achromatopsia (no color) | #424242 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383F6B
#383F6B
oklch(38.3% 0.075 275.4)
- #504206
#504206
oklch(38.3% 0.075 94.5)
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 #383F6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.044
- Twilight Blue #0A437A ΔE 0.049
- Charcoal #264653 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.061
- Marine Blue #01386A ΔE 0.062
- Light Navy #155084 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.065
Use #383F6B 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.