#384B58
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.2% 0.032 238.5), rgb(56, 75, 88).
Aa
White text reads best on this color (9.06:1).
About this color
#384B58 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.032 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.026 away. White text reads best on it, at 9.06:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #384B58 |
| RGB | rgb(56, 75, 88) |
| HSL | hsl(204, 22%, 28%) |
| OKLCH | oklch(40.2% 0.032 238.5) |
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 #384B58 | 9.06:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #384B58 | 2.31:1 | Fails | Lc 13.1 | Not readable |
| #384B58 text on white | 9.06:1 | AAA | Lc 90.8 | Preferred for body text |
| #384B58 text on black | 2.31:1 | Fails | Lc -11.5 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B6C3CC
oklch(81% 0.019 237.8)
-
Step 400
400
#90A4B2
oklch(70.8% 0.03 238.4)
-
Step 500
500
#748D9F
oklch(63% 0.039 239.6)
-
Step 600
600
#5D778A
oklch(55.6% 0.042 240.2)
-
Step 700
700
#4C6475
oklch(49.1% 0.04 239.5)
-
Step 800
800 (this color)
#384B58
oklch(40.2% 0.032 238.5)
-
Step 900
900
#35444E
oklch(37.8% 0.026 237.6)
-
Step 950
950
#1F282D
oklch(27% 0.016 232.4)
#384B58 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) | #454B59 | 0.019 |
| Deuteranopia (no green cones) | #414758 | 0.017 |
| Tritanopia (no blue cones) | #2E4E4F | 0.025 |
| Achromatopsia (no color) | #494949 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #384B58
#384B58
oklch(40.2% 0.032 238.5)
- #564437
#564437
oklch(40.2% 0.033 57.5)
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 #384B58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.028
- Charcoal #264653 ΔE 0.030
- Charcoal Grey #3C4142 ΔE 0.041
- Deep Teal #00555A ΔE 0.048
- Dark Teal #014D4E ΔE 0.051
- Dark Blue Green #005249 ΔE 0.059
- Onyx #343A40 ΔE 0.060
Use #384B58 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.