#40425C
Closest named color: Dark Grey Blue (#29465B). oklch(38.8% 0.044 280.7), rgb(64, 66, 92).
Aa
White text reads best on this color (9.75:1).
About this color
#40425C is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.044 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.033 away. White text reads best on it, at 9.75:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.15:1 |
| White text | 9.75:1 |
Values
| HEX | #40425C |
| RGB | rgb(64, 66, 92) |
| HSL | hsl(236, 18%, 31%) |
| OKLCH | oklch(38.8% 0.044 280.7) |
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 #40425C | 9.75:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #40425C | 2.15:1 | Fails | Lc 11.3 | Not readable |
| #40425C text on white | 9.75:1 | AAA | Lc 92.6 | Preferred for body text |
| #40425C text on black | 2.15:1 | Fails | Lc -9.8 | 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
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E5
oklch(88.5% 0.018 279)
-
Step 300
300
#BCBFD6
oklch(81% 0.032 279.7)
-
Step 400
400
#9A9DC2
oklch(70.6% 0.054 281.3)
-
Step 500
500
#8285B2
oklch(63.1% 0.068 281.3)
-
Step 600
600
#6B6E9E
oklch(55.5% 0.074 280.9)
-
Step 700
700
#595C87
oklch(49% 0.069 280.5)
-
Step 800
800
#494B6E
oklch(42.6% 0.058 281.1)
-
Step 900
900 (this color)
#40425C
oklch(38.8% 0.044 280.7)
-
Step 950
950
#242534
oklch(27% 0.028 281.4)
#40425C 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) | #3B455D | 0.011 |
| Deuteranopia (no green cones) | #39435B | 0.011 |
| Tritanopia (no blue cones) | #39474B | 0.040 |
| Achromatopsia (no color) | #444444 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40425C
#40425C
oklch(38.8% 0.044 280.7)
- #4A4529
#4A4529
oklch(38.8% 0.044 99.4)
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 #40425C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.046
- Onyx #343A40 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.069
- Twilight Blue #0A437A ΔE 0.073
Use #40425C 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.