#423385
Closest named color: Dark Slate Blue (#483D8B). oklch(38.6% 0.132 286.9), rgb(66, 51, 133).
Aa
White text reads best on this color (10.27:1).
About this color
#423385 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.132 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.029 away. White text reads best on it, at 10.27:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.27:1 |
Values
| HEX | #423385 |
| RGB | rgb(66, 51, 133) |
| HSL | hsl(251, 45%, 36%) |
| OKLCH | oklch(38.6% 0.132 286.9) |
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 #423385 | 10.27:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #423385 | 2.04:1 | Fails | Lc 10.4 | Not readable |
| #423385 text on white | 10.27:1 | AAA | Lc 93.5 | Preferred for body text |
| #423385 text on black | 2.04:1 | Fails | Lc -9.0 | 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 900.
-
Step 50
50
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E7FD
oklch(93.5% 0.03 287.9)
-
Step 200
200
#D6D4FC
oklch(88.4% 0.055 287.5)
-
Step 300
300
#BCB7FE
oklch(80.9% 0.1 287.2)
-
Step 400
400
#9B8EFD
oklch(70.6% 0.159 287)
-
Step 500
500
#866EFB
oklch(63.2% 0.202 287)
-
Step 600
600
#7150EA
oklch(55.6% 0.22 286.7)
-
Step 700
700
#603FCB
oklch(49.1% 0.204 287.1)
-
Step 800
800
#4E36A4
oklch(42.8% 0.168 287)
-
Step 900
900 (this color)
#423385
oklch(38.6% 0.132 286.9)
-
Step 950
950
#251D4C
oklch(26.9% 0.083 287.2)
#423385 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) | #004388 | 0.071 |
| Deuteranopia (no green cones) | #003E83 | 0.070 |
| Tritanopia (no blue cones) | #2B4657 | 0.109 |
| Achromatopsia (no color) | #414141 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423385
#423385
oklch(38.6% 0.132 286.9)
- #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 #423385, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.029
- Blueberry #464196 ΔE 0.044
- Cobalt #1E488F ΔE 0.066
- Twilight Blue #0A437A ΔE 0.074
- Rebecca Purple #663399 ΔE 0.074
- Sapphire #2138AB ΔE 0.077
- Indigo #4B0082 ΔE 0.078
- Imperial Purple #480CA8 ΔE 0.078
Use #423385 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.