#402B83
Closest named color: Dark Slate Blue (#483D8B). oklch(36.9% 0.14 288.5), rgb(64, 43, 131).
Aa
White text reads best on this color (11.10:1).
About this color
#402B83 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.140 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.048 away. White text reads best on it, at 11.10:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.89:1 |
| White text | 11.10:1 |
Values
| HEX | #402B83 |
| RGB | rgb(64, 43, 131) |
| HSL | hsl(254, 51%, 34%) |
| OKLCH | oklch(36.9% 0.14 288.5) |
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 #402B83 | 11.10:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #402B83 | 1.89:1 | Fails | Lc 8.7 | Not readable |
| #402B83 text on white | 11.10:1 | AAA | Lc 95.2 | Preferred for body text |
| #402B83 text on black | 1.89:1 | Fails | Lc -7.4 | 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
#E8E7FE
oklch(93.6% 0.031 287.8)
-
Step 200
200
#D7D4FE
oklch(88.6% 0.058 288.4)
-
Step 300
300
#BEB6FF
oklch(80.9% 0.102 288.9)
-
Step 400
400
#9E8DFF
oklch(70.8% 0.163 288.4)
-
Step 500
500
#896AFF
oklch(63.1% 0.212 288.4)
-
Step 600
600
#764AF0
oklch(55.7% 0.233 288.6)
-
Step 700
700
#6339D1
oklch(49.1% 0.217 288.3)
-
Step 800
800
#5131A9
oklch(42.8% 0.18 288.6)
-
Step 900
900 (this color)
#402B83
oklch(36.9% 0.14 288.5)
-
Step 950
950
#261C4E
oklch(27% 0.088 288.2)
#402B83 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) | #003D86 | 0.074 |
| Deuteranopia (no green cones) | #003981 | 0.073 |
| Tritanopia (no blue cones) | #294053 | 0.113 |
| Achromatopsia (no color) | #3C3C3C | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402B83
#402B83
oklch(36.9% 0.14 288.5)
- #434200
#434200
oklch(36.8% 0.08 108.8)
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 #402B83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.048
- Indigo #4B0082 ΔE 0.061
- Blueberry #464196 ΔE 0.062
- Imperial Purple #480CA8 ΔE 0.071
- Royal Purple #4B006E ΔE 0.077
- Cobalt #1E488F ΔE 0.080
- Indigo Blue #3A18B1 ΔE 0.081
- Sapphire #2138AB ΔE 0.082
Use #402B83 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.