#423396
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.155 283.8), rgb(66, 51, 150).
Aa
White text reads best on this color (9.78:1).
About this color
#423396 is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.155 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 9.78:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #423396 |
| RGB | rgb(66, 51, 150) |
| HSL | hsl(249, 49%, 39%) |
| OKLCH | oklch(40% 0.155 283.8) |
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 #423396 | 9.78:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #423396 | 2.14:1 | Fails | Lc 11.7 | Not readable |
| #423396 text on white | 9.78:1 | AAA | Lc 92.2 | Preferred for body text |
| #423396 text on black | 2.14:1 | Fails | Lc -10.2 | 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
#E7E8FF
oklch(93.7% 0.031 283.8)
-
Step 200
200
#D4D5FF
oklch(88.6% 0.058 284.1)
-
Step 300
300
#B8B8FF
oklch(80.8% 0.1 283.9)
-
Step 400
400
#9690FF
oklch(70.7% 0.159 284)
-
Step 500
500
#7F6FFF
oklch(63.1% 0.206 283.8)
-
Step 600
600
#6C46FF
oklch(55.6% 0.255 283.8)
-
Step 700
700
#5B33E0
oklch(49.1% 0.24 283.7)
-
Step 800
800
#4A2DB5
oklch(42.7% 0.199 283.9)
-
Step 900
900 (this color)
#423396
oklch(40% 0.155 283.8)
-
Step 950
950
#231B53
oklch(26.9% 0.098 284.2)
#423396 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) | #004799 | 0.071 |
| Deuteranopia (no green cones) | #004094 | 0.067 |
| Tritanopia (no blue cones) | #1C4C60 | 0.130 |
| Achromatopsia (no color) | #444444 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423396
#423396
oklch(40% 0.155 283.8)
- #504900
#504900
oklch(40% 0.084 103.2)
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 #423396, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.035
- Sapphire #2138AB ΔE 0.056
- Imperial Purple #480CA8 ΔE 0.060
- Indigo Blue #3A18B1 ΔE 0.063
- Cobalt #1E488F ΔE 0.065
- Rebecca Purple #663399 ΔE 0.067
- Chrysanthemum #560BAD ΔE 0.069
Use #423396 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.