#423564
Closest named color: Prussian Blue (#1D3557). oklch(36.6% 0.08 294.9), rgb(66, 53, 100).
Aa
White text reads best on this color (10.90:1).
About this color
#423564 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.080 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.062 away. White text reads best on it, at 10.90:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.080) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.92:1 |
| White text | 10.90:1 |
Values
| HEX | #423564 |
| RGB | rgb(66, 53, 100) |
| HSL | hsl(257, 31%, 30%) |
| OKLCH | oklch(36.6% 0.08 294.9) |
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 #423564 | 10.90:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #423564 | 1.92:1 | Fails | Lc 8.7 | Not readable |
| #423564 text on white | 10.90:1 | AAA | Lc 95.2 | Preferred for body text |
| #423564 text on black | 1.92:1 | Fails | Lc -7.5 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DAD5ED
oklch(88.4% 0.033 295.3)
-
Step 300
300
#C3BAE4
oklch(81% 0.059 294.9)
-
Step 400
400
#A595D6
oklch(70.8% 0.095 295.2)
-
Step 500
500
#8F79CB
oklch(63% 0.122 295)
-
Step 600
600
#7A61B8
oklch(55.7% 0.132 295)
-
Step 700
700
#67509F
oklch(49.2% 0.124 294.9)
-
Step 800
800
#544281
oklch(42.9% 0.102 294.9)
-
Step 900
900 (this color)
#423564
oklch(36.6% 0.08 294.9)
-
Step 950
950
#28213C
oklch(26.9% 0.05 294.8)
#423564 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) | #263D66 | 0.046 |
| Deuteranopia (no green cones) | #283C63 | 0.043 |
| Tritanopia (no blue cones) | #3A3E47 | 0.066 |
| Achromatopsia (no color) | #3D3D3D | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423564
#423564
oklch(36.6% 0.08 294.9)
- #3E4304
#3E4304
oklch(36.6% 0.08 114.5)
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 #423564, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.068
- Dark Blue Grey #1F3B4D ΔE 0.072
- Marine Blue #01386A ΔE 0.074
- Twilight Blue #0A437A ΔE 0.074
- Onyx #343A40 ΔE 0.074
- Space Cadet #2B2D42 ΔE 0.075
Use #423564 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.