#423070
Closest named color: Dark Slate Blue (#483D8B). oklch(36.4% 0.106 293.4), rgb(66, 48, 112).
Aa
White text reads best on this color (11.12:1).
About this color
#423070 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.106 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 11.12:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.88:1 |
| White text | 11.12:1 |
Values
| HEX | #423070 |
| RGB | rgb(66, 48, 112) |
| HSL | hsl(257, 40%, 31%) |
| OKLCH | oklch(36.4% 0.106 293.4) |
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 #423070 | 11.12:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #423070 | 1.88:1 | Fails | Lc 8.4 | Not readable |
| #423070 text on white | 11.12:1 | AAA | Lc 95.5 | Preferred for body text |
| #423070 text on black | 1.88:1 | Fails | Lc 0.0 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F4
oklch(88.5% 0.044 294.1)
-
Step 300
300
#C2B7F0
oklch(80.8% 0.08 293.4)
-
Step 400
400
#A490E8
oklch(70.6% 0.127 293.3)
-
Step 500
500
#9072E1
oklch(63.1% 0.163 293.7)
-
Step 600
600
#7B58CF
oklch(55.7% 0.176 293.4)
-
Step 700
700
#6847B3
oklch(49.1% 0.164 293.5)
-
Step 800
800
#543B91
oklch(42.7% 0.136 293.2)
-
Step 900
900 (this color)
#423070
oklch(36.4% 0.106 293.4)
-
Step 950
950
#281F44
oklch(27% 0.067 292.5)
#423070 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) | #123C72 | 0.067 |
| Deuteranopia (no green cones) | #173A6F | 0.063 |
| Tritanopia (no blue cones) | #363D4B | 0.085 |
| Achromatopsia (no color) | #3B3B3B | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423070
#423070
oklch(36.4% 0.106 293.4)
- #3F4200
#3F4200
oklch(36.4% 0.081 112.7)
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 #423070, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Blueberry #464196 ΔE 0.074
- Prussian Blue #1D3557 ΔE 0.075
- Twilight Blue #0A437A ΔE 0.076
- Marine Blue #01386A ΔE 0.077
- Indigo #4B0082 ΔE 0.080
- Royal Purple #4B006E ΔE 0.080
- Cobalt #1E488F ΔE 0.085
Use #423070 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.