#40394A
Closest named color: Onyx (#343A40). oklch(35.9% 0.03 303.7), rgb(64, 57, 74).
Aa
White text reads best on this color (11.04:1).
About this color
#40394A is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.030 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.029 away. White text reads best on it, at 11.04:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.030) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.90:1 |
| White text | 11.04:1 |
Values
| HEX | #40394A |
| RGB | rgb(64, 57, 74) |
| HSL | hsl(265, 13%, 26%) |
| OKLCH | oklch(35.9% 0.03 303.7) |
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 #40394A | 11.04:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #40394A | 1.90:1 | Fails | Lc 8.3 | Not readable |
| #40394A text on white | 11.04:1 | AAA | Lc 95.6 | Preferred for body text |
| #40394A text on black | 1.90:1 | Fails | Lc 0.0 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9ED
oklch(93.7% 0.006 308.4)
-
Step 200
200
#DBD7E0
oklch(88.5% 0.013 306)
-
Step 300
300
#C3BDCD
oklch(80.8% 0.023 302.9)
-
Step 400
400
#A59BB4
oklch(70.6% 0.038 303.6)
-
Step 500
500
#8F83A1
oklch(63.1% 0.046 303.3)
-
Step 600
600
#796C8C
oklch(55.5% 0.051 303.3)
-
Step 700
700
#665A77
oklch(49% 0.048 303.6)
-
Step 800
800
#534A61
oklch(42.7% 0.039 302.6)
-
Step 900
900 (this color)
#40394A
oklch(35.9% 0.03 303.7)
-
Step 950
950
#28242E
oklch(26.9% 0.019 303.3)
#40394A 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) | #363C4B | 0.018 |
| Deuteranopia (no green cones) | #373C49 | 0.018 |
| Tritanopia (no blue cones) | #3F3B3F | 0.023 |
| Achromatopsia (no color) | #3C3C3C | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40394A
#40394A
oklch(35.9% 0.03 303.7)
- #39402E
#39402E
oklch(35.9% 0.031 125.2)
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 #40394A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.048
- Gunmetal #293241 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Charcoal #264653 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.060
Use #40394A 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.