#40425D
Closest named color: Dark Grey Blue (#29465B). oklch(38.9% 0.046 280.8), rgb(64, 66, 93).
Aa
White text reads best on this color (9.74:1).
About this color
#40425D is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.046 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 9.74:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #40425D |
| RGB | rgb(64, 66, 93) |
| HSL | hsl(236, 18%, 31%) |
| OKLCH | oklch(38.9% 0.046 280.8) |
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 #40425D | 9.74:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #40425D | 2.15:1 | Fails | Lc 11.4 | Not readable |
| #40425D text on white | 9.74:1 | AAA | Lc 92.6 | Preferred for body text |
| #40425D text on black | 2.15:1 | Fails | Lc -9.9 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BCBFD7
oklch(81% 0.034 280)
-
Step 400
400
#9A9DC3
oklch(70.7% 0.055 281.3)
-
Step 500
500
#8185B4
oklch(63.1% 0.071 280.4)
-
Step 600
600
#6B6E9F
oklch(55.6% 0.076 280.9)
-
Step 700
700
#595C88
oklch(49.1% 0.07 280.5)
-
Step 800
800
#494B6F
oklch(42.7% 0.06 281.1)
-
Step 900
900 (this color)
#40425D
oklch(38.9% 0.046 280.8)
-
Step 950
950
#242534
oklch(27% 0.028 281.4)
#40425D 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) | #3A455E | 0.012 |
| Deuteranopia (no green cones) | #39435C | 0.011 |
| Tritanopia (no blue cones) | #39474B | 0.041 |
| Achromatopsia (no color) | #444444 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40425D
#40425D
oklch(38.9% 0.046 280.8)
- #4A4628
#4A4628
oklch(39% 0.046 101.7)
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 #40425D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.034
- Charcoal #264653 ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.047
- Onyx #343A40 ΔE 0.056
- Dark Slate Gray #2F4F4F ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.069
- Twilight Blue #0A437A ΔE 0.072
Use #40425D 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.