#424371
Closest named color: Dark Slate Blue (#483D8B). oklch(40.4% 0.077 281.5), rgb(66, 67, 113).
Aa
White text reads best on this color (9.23:1).
About this color
#424371 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.077 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.050 away. White text reads best on it, at 9.23:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #424371 |
| RGB | rgb(66, 67, 113) |
| HSL | hsl(239, 26%, 35%) |
| OKLCH | oklch(40.4% 0.077 281.5) |
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 #424371 | 9.23:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #424371 | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #424371 text on white | 9.23:1 | AAA | Lc 91.2 | Preferred for body text |
| #424371 text on black | 2.27:1 | Fails | Lc -11.1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D6D8EA
oklch(88.6% 0.025 280.8)
-
Step 300
300
#BBBEDE
oklch(81% 0.045 281.1)
-
Step 400
400
#989CCD
oklch(70.7% 0.072 280.8)
-
Step 500
500
#8083C0
oklch(63.2% 0.091 281.3)
-
Step 600
600
#6A6BAC
oklch(55.5% 0.1 282)
-
Step 700
700
#585994
oklch(49% 0.094 281.6)
-
Step 800
800 (this color)
#424371
oklch(40.4% 0.077 281.5)
-
Step 900
900
#3C3E61
oklch(37.8% 0.06 280.6)
-
Step 950
950
#232439
oklch(27% 0.039 281.4)
#424371 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) | #334973 | 0.025 |
| Deuteranopia (no green cones) | #314670 | 0.025 |
| Tritanopia (no blue cones) | #344C54 | 0.067 |
| Achromatopsia (no color) | #474747 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424371
#424371
oklch(40.4% 0.077 281.5)
- #524A0E
#524A0E
oklch(40.5% 0.077 101.4)
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 #424371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.055
- Dusk #4E5481 ΔE 0.057
- Twilight #4E518B ΔE 0.058
- Light Navy #155084 ΔE 0.059
- Twilight Blue #0A437A ΔE 0.060
- Cobalt #1E488F ΔE 0.063
- Dusk Blue #26538D ΔE 0.063
Use #424371 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.