#404263
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.056 280.8), rgb(64, 66, 99).
Aa
White text reads best on this color (9.64:1).
About this color
#404263 is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.056 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.038 away. White text reads best on it, at 9.64:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.17:1 |
| White text | 9.64:1 |
Values
| HEX | #404263 |
| RGB | rgb(64, 66, 99) |
| HSL | hsl(237, 21%, 32%) |
| OKLCH | oklch(39.2% 0.056 280.8) |
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 #404263 | 9.64:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #404263 | 2.17:1 | Fails | Lc 11.6 | Not readable |
| #404263 text on white | 9.64:1 | AAA | Lc 92.3 | Preferred for body text |
| #404263 text on black | 2.17:1 | Fails | Lc -10.1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E9
oklch(88.6% 0.023 280.6)
-
Step 300
300
#BBBEDC
oklch(80.9% 0.042 280.9)
-
Step 400
400
#989CCA
oklch(70.6% 0.067 280.6)
-
Step 500
500
#8083BC
oklch(63% 0.085 281.3)
-
Step 600
600
#6A6CA9
oklch(55.6% 0.094 281.4)
-
Step 700
700
#585A91
oklch(49% 0.087 281.1)
-
Step 800
800
#484A75
oklch(42.7% 0.071 280.9)
-
Step 900
900 (this color)
#404263
oklch(39.2% 0.056 280.8)
-
Step 950
950
#232437
oklch(26.8% 0.035 281.4)
#404263 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) | #384664 | 0.016 |
| Deuteranopia (no green cones) | #364362 | 0.015 |
| Tritanopia (no blue cones) | #37484E | 0.048 |
| Achromatopsia (no color) | #454545 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404263
#404263
oklch(39.2% 0.056 280.8)
- #4C4621
#4C4621
oklch(39.1% 0.055 100.3)
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 #404263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.038
- Charcoal #264653 ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.058
- Onyx #343A40 ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.065
- Dark Slate Gray #2F4F4F ΔE 0.065
- Twilight Blue #0A437A ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.070
Use #404263 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.