#402583
Closest named color: Indigo (#4B0082). oklch(35.9% 0.148 290.1), rgb(64, 37, 131).
Aa
White text reads best on this color (11.59:1).
About this color
#402583 is a dark, vivid purple. In OKLCH its lightness is 36%, its chroma 0.148 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.050 away. White text reads best on it, at 11.59:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.81:1 |
| White text | 11.59:1 |
Values
| HEX | #402583 |
| RGB | rgb(64, 37, 131) |
| HSL | hsl(257, 56%, 33%) |
| OKLCH | oklch(35.9% 0.148 290.1) |
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 #402583 | 11.59:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #402583 | 1.81:1 | Fails | Lc 7.8 | Not readable |
| #402583 text on white | 11.59:1 | AAA | Lc 96.1 | Preferred for body text |
| #402583 text on black | 1.81:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E9E7FF
oklch(93.7% 0.032 289.6)
-
Step 200
200
#D8D3FF
oklch(88.5% 0.06 290.3)
-
Step 300
300
#BFB5FF
oklch(80.8% 0.104 290.1)
-
Step 400
400
#A18BFF
oklch(70.7% 0.166 290.2)
-
Step 500
500
#8D68FF
oklch(63.2% 0.214 290.2)
-
Step 600
600
#7A43F5
oklch(55.6% 0.246 290.1)
-
Step 700
700
#6732D6
oklch(49.1% 0.23 289.9)
-
Step 800
800
#542CAD
oklch(42.8% 0.19 290.1)
-
Step 900
900 (this color)
#402583
oklch(35.9% 0.148 290.1)
-
Step 950
950
#281A50
oklch(27% 0.094 290.6)
#402583 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) | #003A86 | 0.079 |
| Deuteranopia (no green cones) | #003781 | 0.078 |
| Tritanopia (no blue cones) | #293D51 | 0.119 |
| Achromatopsia (no color) | #393939 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402583
#402583
oklch(35.9% 0.148 290.1)
- #404000
#404000
oklch(36% 0.078 109.8)
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 #402583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.060
- Imperial Purple #480CA8 ΔE 0.066
- Royal Purple #4B006E ΔE 0.068
- Blueberry #464196 ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.079
- Chrysanthemum #560BAD ΔE 0.081
- Midnight Blue #191970 ΔE 0.084
Use #402583 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.