#423F94
Closest named color: Blueberry (#464196). oklch(42% 0.136 280.4), rgb(66, 63, 148).
Aa
White text reads best on this color (8.85:1).
About this color
#423F94 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.136 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.009 away. White text reads best on it, at 8.85:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #423F94 |
| RGB | rgb(66, 63, 148) |
| HSL | hsl(242, 40%, 41%) |
| OKLCH | oklch(42% 0.136 280.4) |
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 #423F94 | 8.85:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #423F94 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #423F94 text on white | 8.85:1 | AAA | Lc 90.0 | Fine for body text |
| #423F94 text on black | 2.37:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D3D7F6
oklch(88.6% 0.043 279.7)
-
Step 300
300
#B6BBF4
oklch(80.8% 0.081 280.5)
-
Step 400
400
#9297EE
oklch(70.8% 0.126 280.1)
-
Step 500
500
#797AE8
oklch(63.1% 0.162 280.3)
-
Step 600
600
#6460D6
oklch(55.6% 0.176 280.5)
-
Step 700
700
#534FBA
oklch(49.2% 0.164 280.2)
-
Step 800
800 (this color)
#423F94
oklch(42% 0.136 280.4)
-
Step 900
900
#393878
oklch(37.7% 0.106 280.7)
-
Step 950
950
#212146
oklch(26.9% 0.067 280.9)
#423F94 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) | #004D97 | 0.061 |
| Deuteranopia (no green cones) | #004792 | 0.060 |
| Tritanopia (no blue cones) | #1C5363 | 0.118 |
| Achromatopsia (no color) | #4A4A4A | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423F94
#423F94
oklch(42% 0.136 280.4)
- #584E00
#584E00
oklch(42.1% 0.088 100.9)
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 #423F94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.009
- Dark Slate Blue #483D8B ΔE 0.018
- Cobalt #1E488F ΔE 0.047
- Twilight #4E518B ΔE 0.058
- Sapphire #2138AB ΔE 0.061
- Dusk Blue #26538D ΔE 0.062
- Rebecca Purple #663399 ΔE 0.067
- Light Navy #155084 ΔE 0.070
Use #423F94 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.