#423481
Closest named color: Dark Slate Blue (#483D8B). oklch(38.5% 0.124 287.4), rgb(66, 52, 129).
Aa
White text reads best on this color (10.29:1).
About this color
#423481 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.124 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.030 away. White text reads best on it, at 10.29:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.03:1 |
| White text | 10.29:1 |
Values
| HEX | #423481 |
| RGB | rgb(66, 52, 129) |
| HSL | hsl(251, 43%, 35%) |
| OKLCH | oklch(38.5% 0.124 287.4) |
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 #423481 | 10.29:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #423481 | 2.03:1 | Fails | Lc 10.3 | Not readable |
| #423481 text on white | 10.29:1 | AAA | Lc 93.6 | Preferred for body text |
| #423481 text on black | 2.03:1 | Fails | Lc -8.9 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E8E8FC
oklch(93.7% 0.027 285.9)
-
Step 200
200
#D6D5FA
oklch(88.6% 0.051 286.6)
-
Step 300
300
#BCB8FA
oklch(80.9% 0.093 286.9)
-
Step 400
400
#9C90F8
oklch(70.8% 0.149 287.2)
-
Step 500
500
#8670F4
oklch(63.1% 0.19 287.3)
-
Step 600
600
#7253E3
oklch(55.5% 0.208 287.5)
-
Step 700
700
#6042C5
oklch(49% 0.193 287.6)
-
Step 800
800
#4E38A0
oklch(42.8% 0.16 287.3)
-
Step 900
900 (this color)
#423481
oklch(38.5% 0.124 287.4)
-
Step 950
950
#251E4A
oklch(27% 0.079 287.2)
#423481 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) | #004284 | 0.070 |
| Deuteranopia (no green cones) | #003E7F | 0.070 |
| Tritanopia (no blue cones) | #2D4555 | 0.103 |
| Achromatopsia (no color) | #404040 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423481
#423481
oklch(38.5% 0.124 287.4)
- #494600
#494600
oklch(38.5% 0.082 106.9)
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 #423481, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.030
- Blueberry #464196 ΔE 0.047
- Cobalt #1E488F ΔE 0.066
- Twilight Blue #0A437A ΔE 0.071
- Rebecca Purple #663399 ΔE 0.077
- Indigo #4B0082 ΔE 0.080
- Sapphire #2138AB ΔE 0.082
- Twilight #4E518B ΔE 0.083
Use #423481 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.