#423574
Closest named color: Dark Slate Blue (#483D8B). oklch(37.7% 0.104 290), rgb(66, 53, 116).
Aa
White text reads best on this color (10.53:1).
About this color
#423574 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.104 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 10.53:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #423574 |
| RGB | rgb(66, 53, 116) |
| HSL | hsl(252, 37%, 33%) |
| OKLCH | oklch(37.7% 0.104 290) |
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 #423574 | 10.53:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #423574 | 1.99:1 | Fails | Lc 9.7 | Not readable |
| #423574 text on white | 10.53:1 | AAA | Lc 94.2 | Preferred for body text |
| #423574 text on black | 1.99:1 | Fails | Lc -8.3 | 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 900.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F5
oklch(88.5% 0.044 289.8)
-
Step 300
300
#BFB9F0
oklch(80.9% 0.077 289.6)
-
Step 400
400
#A092E9
oklch(70.7% 0.126 290.2)
-
Step 500
500
#8A75E2
oklch(63.2% 0.159 289.9)
-
Step 600
600
#755BD0
oklch(55.7% 0.173 289.8)
-
Step 700
700
#634AB4
oklch(49.2% 0.161 290.1)
-
Step 800
800
#503D92
oklch(42.7% 0.134 289.8)
-
Step 900
900 (this color)
#423574
oklch(37.7% 0.104 290)
-
Step 950
950
#262044
oklch(27% 0.065 288.9)
#423574 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) | #194076 | 0.058 |
| Deuteranopia (no green cones) | #1B3E73 | 0.056 |
| Tritanopia (no blue cones) | #34424F | 0.085 |
| Achromatopsia (no color) | #3F3F3F | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423574
#423574
oklch(37.7% 0.104 290)
- #454500
#454500
oklch(37.8% 0.082 109.8)
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 #423574, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Blueberry #464196 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.068
- Cobalt #1E488F ΔE 0.073
- Marine Blue #01386A ΔE 0.076
- Prussian Blue #1D3557 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.080
- Light Navy #155084 ΔE 0.085
Use #423574 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.