#404058
Closest named color: Dark Grey Blue (#29465B). oklch(38.2% 0.041 284.3), rgb(64, 64, 88).
Aa
White text reads best on this color (10.03:1).
About this color
#404058 is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.041 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.035 away. White text reads best on it, at 10.03:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.09:1 |
| White text | 10.03:1 |
Values
| HEX | #404058 |
| RGB | rgb(64, 64, 88) |
| HSL | hsl(240, 16%, 30%) |
| OKLCH | oklch(38.2% 0.041 284.3) |
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 #404058 | 10.03:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #404058 | 2.09:1 | Fails | Lc 10.6 | Not readable |
| #404058 text on white | 10.03:1 | AAA | Lc 93.3 | Preferred for body text |
| #404058 text on black | 2.09:1 | Fails | Lc -9.2 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D7D8E4
oklch(88.5% 0.016 282.2)
-
Step 300
300
#BEBED4
oklch(80.8% 0.031 285.7)
-
Step 400
400
#9C9DBF
oklch(70.7% 0.049 283.7)
-
Step 500
500
#8585AE
oklch(63.2% 0.061 284.5)
-
Step 600
600
#6E6E9A
oklch(55.6% 0.068 284)
-
Step 700
700
#5C5C84
oklch(49.1% 0.064 283.8)
-
Step 800
800
#4B4B6B
oklch(42.6% 0.053 283.9)
-
Step 900
900 (this color)
#404058
oklch(38.2% 0.041 284.3)
-
Step 950
950
#252533
oklch(27.1% 0.026 284.5)
#404058 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) | #3A4359 | 0.012 |
| Deuteranopia (no green cones) | #394157 | 0.012 |
| Tritanopia (no blue cones) | #3A4448 | 0.036 |
| Achromatopsia (no color) | #424242 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404058
#404058
oklch(38.2% 0.041 284.3)
- #46442A
#46442A
oklch(38.1% 0.041 104.4)
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 #404058, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.035
- Charcoal Grey #3C4142 ΔE 0.041
- Charcoal #264653 ΔE 0.042
- Onyx #343A40 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.065
- Gunmetal #293241 ΔE 0.069
Use #404058 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.