#40209A
Closest named color: Imperial Purple (#480CA8). oklch(37.5% 0.181 285.7), rgb(64, 32, 154).
Aa
White text reads best on this color (11.10:1).
About this color
#40209A is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.181 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Imperial Purple (#480CA8), ΔE 0.031 away. White text reads best on it, at 11.10:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Imperial Purple (#480CA8) |
| Black text | 1.89:1 |
| White text | 11.10:1 |
Values
| HEX | #40209A |
| RGB | rgb(64, 32, 154) |
| HSL | hsl(256, 66%, 36%) |
| OKLCH | oklch(37.5% 0.181 285.7) |
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 #40209A | 11.10:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #40209A | 1.89:1 | Fails | Lc 9.2 | Not readable |
| #40209A text on white | 11.10:1 | AAA | Lc 94.7 | Preferred for body text |
| #40209A text on black | 1.89:1 | Fails | Lc -7.9 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E7E7FF
oklch(93.5% 0.032 285.8)
-
Step 200
200
#D5D4FF
oklch(88.5% 0.059 286.2)
-
Step 300
300
#BAB7FF
oklch(80.8% 0.101 285.8)
-
Step 400
400
#998FFF
oklch(70.7% 0.16 285.6)
-
Step 500
500
#836DFF
oklch(63.1% 0.208 285.7)
-
Step 600
600
#7142FF
oklch(55.6% 0.259 285.8)
-
Step 700
700
#630AF4
oklch(49.2% 0.282 285.8)
-
Step 800
800
#5017C5
oklch(42.8% 0.233 285.8)
-
Step 900
900 (this color)
#40209A
oklch(37.5% 0.181 285.7)
-
Step 950
950
#25165A
oklch(26.9% 0.115 286)
#40209A 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) | #003F9D | 0.082 |
| Deuteranopia (no green cones) | #003898 | 0.076 |
| Tritanopia (no blue cones) | #11445D | 0.149 |
| Achromatopsia (no color) | #3C3C3C | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40209A
#40209A
oklch(37.5% 0.181 285.7)
- #474300
#474300
oklch(37.5% 0.08 105.8)
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 #40209A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Purple #480CA8 ΔE 0.031
- Indigo Blue #3A18B1 ΔE 0.041
- Chrysanthemum #560BAD ΔE 0.052
- Indigo #4B0082 ΔE 0.062
- Sapphire #2138AB ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.069
- Blueberry #464196 ΔE 0.071
- Ultramarine #2000B1 ΔE 0.076
Use #40209A 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.