#423993
Closest named color: Dark Slate Blue (#483D8B). oklch(40.8% 0.143 282.6), rgb(66, 57, 147).
Aa
White text reads best on this color (9.38:1).
About this color
#423993 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.143 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.021 away. White text reads best on it, at 9.38:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.23:1 |
| White text | 9.38:1 |
Values
| HEX | #423993 |
| RGB | rgb(66, 57, 147) |
| HSL | hsl(246, 44%, 40%) |
| OKLCH | oklch(40.8% 0.143 282.6) |
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 #423993 | 9.38:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #423993 | 2.23:1 | Fails | Lc 12.7 | Not readable |
| #423993 text on white | 9.38:1 | AAA | Lc 91.3 | Preferred for body text |
| #423993 text on black | 2.23:1 | Fails | Lc -11.0 | 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
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F8
oklch(88.5% 0.047 282.7)
-
Step 300
300
#B8BAF6
oklch(80.8% 0.084 282.8)
-
Step 400
400
#9595F1
oklch(70.8% 0.133 282.5)
-
Step 500
500
#7D77EC
oklch(63.1% 0.171 282.6)
-
Step 600
600
#685DDA
oklch(55.6% 0.185 282.6)
-
Step 700
700
#574BBD
oklch(49% 0.172 282.8)
-
Step 800
800 (this color)
#423993
oklch(40.8% 0.143 282.6)
-
Step 900
900
#3B367A
oklch(37.7% 0.112 282.9)
-
Step 950
950
#222047
oklch(26.9% 0.071 282.9)
#423993 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) | #004996 | 0.066 |
| Deuteranopia (no green cones) | #004391 | 0.063 |
| Tritanopia (no blue cones) | #1E4E60 | 0.121 |
| Achromatopsia (no color) | #464646 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423993
#423993
oklch(40.8% 0.143 282.6)
- #534B00
#534B00
oklch(40.8% 0.086 102.5)
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 #423993, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.021
- Blueberry #464196 ΔE 0.022
- Cobalt #1E488F ΔE 0.055
- Sapphire #2138AB ΔE 0.059
- Rebecca Purple #663399 ΔE 0.066
- Twilight #4E518B ΔE 0.072
- Imperial Purple #480CA8 ΔE 0.074
- Dusk Blue #26538D ΔE 0.075
Use #423993 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.