#383E59
Closest named color: Dark Grey Blue (#29465B). oklch(37% 0.047 274.2), rgb(56, 62, 89).
Aa
White text reads best on this color (10.49:1).
About this color
#383E59 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.047 and its hue 274°. 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 10.49:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #383E59 |
| RGB | rgb(56, 62, 89) |
| HSL | hsl(229, 23%, 28%) |
| OKLCH | oklch(37% 0.047 274.2) |
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 #383E59 | 10.49:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #383E59 | 2.00:1 | Fails | Lc 9.6 | Not readable |
| #383E59 text on white | 10.49:1 | AAA | Lc 94.3 | Preferred for body text |
| #383E59 text on black | 2.00:1 | Fails | Lc -8.2 | 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
#E7E9F1
oklch(93.5% 0.011 274.9)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#B9BFD8
oklch(80.8% 0.036 274.9)
-
Step 400
400
#959FC5
oklch(70.8% 0.057 273.4)
-
Step 500
500
#7C86B6
oklch(63% 0.073 275)
-
Step 600
600
#6570A2
oklch(55.7% 0.079 274.1)
-
Step 700
700
#545D8A
oklch(49% 0.073 274.7)
-
Step 800
800
#454C70
oklch(42.6% 0.061 275.1)
-
Step 900
900 (this color)
#383E59
oklch(37% 0.047 274.2)
-
Step 950
950
#222535
oklch(26.9% 0.03 276)
#383E59 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) | #36415A | 0.009 |
| Deuteranopia (no green cones) | #333E58 | 0.008 |
| Tritanopia (no blue cones) | #2F4347 | 0.042 |
| Achromatopsia (no color) | #3F3F3F | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #383E59
#383E59
oklch(37% 0.047 274.2)
- #484021
#484021
oklch(37.2% 0.048 95.3)
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 #383E59, 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 0.037
- Dark Blue Grey #1F3B4D ΔE 0.043
- Onyx #343A40 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.050
- Gunmetal #293241 ΔE 0.058
- Midnight Green #073B4C ΔE 0.061
Use #383E59 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.