#40425F
Closest named color: Dark Grey Blue (#29465B). oklch(39% 0.049 280.8), rgb(64, 66, 95).
Aa
White text reads best on this color (9.71:1).
About this color
#40425F is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.049 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.035 away. White text reads best on it, at 9.71:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #40425F |
| RGB | rgb(64, 66, 95) |
| HSL | hsl(236, 19%, 31%) |
| OKLCH | oklch(39% 0.049 280.8) |
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 #40425F | 9.71:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #40425F | 2.16:1 | Fails | Lc 11.4 | Not readable |
| #40425F text on white | 9.71:1 | AAA | Lc 92.5 | Preferred for body text |
| #40425F text on black | 2.16:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E7
oklch(88.5% 0.021 279.9)
-
Step 300
300
#BCBED9
oklch(80.9% 0.038 282.2)
-
Step 400
400
#999DC5
oklch(70.7% 0.058 280.3)
-
Step 500
500
#8184B7
oklch(63% 0.077 281.4)
-
Step 600
600
#6A6EA2
oklch(55.6% 0.081 280)
-
Step 700
700
#595B8B
oklch(49% 0.077 281.3)
-
Step 800
800
#494B71
oklch(42.8% 0.063 281.1)
-
Step 900
900 (this color)
#40425F
oklch(39% 0.049 280.8)
-
Step 950
950
#232535
oklch(27% 0.03 278.7)
#40425F 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) | #3A4560 | 0.012 |
| Deuteranopia (no green cones) | #38435E | 0.013 |
| Tritanopia (no blue cones) | #38474C | 0.043 |
| Achromatopsia (no color) | #444444 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40425F
#40425F
oklch(39% 0.049 280.8)
- #4B4626
#4B4626
oklch(39.1% 0.049 100.5)
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 #40425F, 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 #264653 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.051
- Onyx #343A40 ΔE 0.059
- Dark Slate Gray #2F4F4F ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.069
- Twilight Blue #0A437A ΔE 0.070
Use #40425F 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.