#424374
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.081 281.2), rgb(66, 67, 116).
Aa
White text reads best on this color (9.18:1).
About this color
#424374 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.081 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 9.18:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.28:1 |
| White text | 9.18:1 |
Values
| HEX | #424374 |
| RGB | rgb(66, 67, 116) |
| HSL | hsl(239, 27%, 36%) |
| OKLCH | oklch(40.6% 0.081 281.2) |
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 #424374 | 9.18:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #424374 | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #424374 text on white | 9.18:1 | AAA | Lc 91.1 | Preferred for body text |
| #424374 text on black | 2.28:1 | Fails | Lc -11.3 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D6D7EB
oklch(88.4% 0.027 283.5)
-
Step 300
300
#BBBEDF
oklch(81% 0.046 281.2)
-
Step 400
400
#989BD0
oklch(70.6% 0.077 281.7)
-
Step 500
500
#7F82C3
oklch(63% 0.097 281.2)
-
Step 600
600
#696BB0
oklch(55.7% 0.106 281.1)
-
Step 700
700
#585997
oklch(49.2% 0.098 281.5)
-
Step 800
800 (this color)
#424374
oklch(40.6% 0.081 281.2)
-
Step 900
900
#3C3D62
oklch(37.6% 0.063 281.7)
-
Step 950
950
#23243A
oklch(27% 0.041 281.3)
#424374 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) | #324A76 | 0.028 |
| Deuteranopia (no green cones) | #2F4673 | 0.027 |
| Tritanopia (no blue cones) | #334D56 | 0.071 |
| Achromatopsia (no color) | #484848 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424374
#424374
oklch(40.6% 0.081 281.2)
- #534A06
#534A06
oklch(40.6% 0.081 101)
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 #424374, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Twilight #4E518B ΔE 0.055
- Dusk #4E5481 ΔE 0.056
- Light Navy #155084 ΔE 0.058
- Blueberry #464196 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.059
- Cobalt #1E488F ΔE 0.059
Use #424374 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.