#424071
Closest named color: Dark Slate Blue (#483D8B). oklch(39.7% 0.081 283.9), rgb(66, 64, 113).
Aa
White text reads best on this color (9.53:1).
About this color
#424071 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.081 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.047 away. White text reads best on it, at 9.53:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #424071 |
| RGB | rgb(66, 64, 113) |
| HSL | hsl(242, 28%, 35%) |
| OKLCH | oklch(39.7% 0.081 283.9) |
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 #424071 | 9.53:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #424071 | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #424071 text on white | 9.53:1 | AAA | Lc 92.0 | Preferred for body text |
| #424071 text on black | 2.20:1 | Fails | Lc -10.4 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D6D7EF
oklch(88.6% 0.033 283.8)
-
Step 300
300
#BBBCE7
oklch(80.9% 0.06 283.9)
-
Step 400
400
#9998DC
oklch(70.7% 0.099 284.3)
-
Step 500
500
#817ED2
oklch(63.2% 0.124 283.9)
-
Step 600
600
#6B65BF
oklch(55.5% 0.136 284)
-
Step 700
700
#5954A5
oklch(49.1% 0.126 283.5)
-
Step 800
800
#494586
oklch(42.7% 0.105 283.8)
-
Step 900
900 (this color)
#424071
oklch(39.7% 0.081 283.9)
-
Step 950
950
#23233F
oklch(27.1% 0.051 282.4)
#424071 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) | #2F4773 | 0.031 |
| Deuteranopia (no green cones) | #2D4470 | 0.031 |
| Tritanopia (no blue cones) | #344A53 | 0.071 |
| Achromatopsia (no color) | #454545 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424071
#424071
oklch(39.7% 0.081 283.9)
- #4F4904
#4F4904
oklch(39.9% 0.082 104)
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 #424071, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.058
- Twilight Blue #0A437A ΔE 0.060
- Blueberry #464196 ΔE 0.062
- Cobalt #1E488F ΔE 0.064
- Twilight #4E518B ΔE 0.064
- Light Navy #155084 ΔE 0.064
- Dusk #4E5481 ΔE 0.064
Use #424071 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.