#423A6A
Closest named color: Dark Slate Blue (#483D8B). oklch(38% 0.08 289.7), rgb(66, 58, 106).
Aa
White text reads best on this color (10.26:1).
About this color
#423A6A is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.080 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.056 away. White text reads best on it, at 10.26:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.26:1 |
Values
| HEX | #423A6A |
| RGB | rgb(66, 58, 106) |
| HSL | hsl(250, 29%, 32%) |
| OKLCH | oklch(38% 0.08 289.7) |
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 #423A6A | 10.26:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #423A6A | 2.04:1 | Fails | Lc 10.2 | Not readable |
| #423A6A text on white | 10.26:1 | AAA | Lc 93.7 | Preferred for body text |
| #423A6A text on black | 2.04:1 | Fails | Lc -8.8 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#BFBBE6
oklch(81% 0.06 289.2)
-
Step 400
400
#9F96D9
oklch(70.6% 0.097 289.8)
-
Step 500
500
#897BCF
oklch(63.1% 0.124 290)
-
Step 600
600
#7363BC
oklch(55.6% 0.135 289.6)
-
Step 700
700
#6152A2
oklch(49.2% 0.124 289.7)
-
Step 800
800
#4F4383
oklch(42.7% 0.103 289.9)
-
Step 900
900 (this color)
#423A6A
oklch(38% 0.08 289.7)
-
Step 950
950
#26223E
oklch(27.1% 0.051 289.1)
#423A6A 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) | #2A426C | 0.039 |
| Deuteranopia (no green cones) | #2A4069 | 0.038 |
| Tritanopia (no blue cones) | #38434D | 0.066 |
| Achromatopsia (no color) | #414141 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423A6A
#423A6A
oklch(38% 0.08 289.7)
- #464604
#464604
oklch(38.2% 0.081 109.7)
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 #423A6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.060
- Twilight Blue #0A437A ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.068
- Charcoal #264653 ΔE 0.073
- Marine Blue #01386A ΔE 0.074
- Blueberry #464196 ΔE 0.074
- Dark Blue Grey #1F3B4D ΔE 0.075
Use #423A6A 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.