#423865
Closest named color: Dark Grey Blue (#29465B). oklch(37.3% 0.076 292.5), rgb(66, 56, 101).
Aa
White text reads best on this color (10.57:1).
About this color
#423865 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.076 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.060 away. White text reads best on it, at 10.57:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.57:1 |
Values
| HEX | #423865 |
| RGB | rgb(66, 56, 101) |
| HSL | hsl(253, 29%, 31%) |
| OKLCH | oklch(37.3% 0.076 292.5) |
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 #423865 | 10.57:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #423865 | 1.98:1 | Fails | Lc 9.5 | Not readable |
| #423865 text on white | 10.57:1 | AAA | Lc 94.5 | Preferred for body text |
| #423865 text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6ED
oklch(88.5% 0.031 291.7)
-
Step 300
300
#C1BAE3
oklch(80.8% 0.058 292.9)
-
Step 400
400
#A296D5
oklch(70.7% 0.092 292.6)
-
Step 500
500
#8C7BCA
oklch(63.1% 0.117 292.6)
-
Step 600
600
#7663B6
oklch(55.5% 0.126 292.3)
-
Step 700
700
#64529D
oklch(49.2% 0.117 292.6)
-
Step 800
800
#51437F
oklch(42.6% 0.097 292.5)
-
Step 900
900 (this color)
#423865
oklch(37.3% 0.076 292.5)
-
Step 950
950
#27223C
oklch(27.1% 0.048 291.7)
#423865 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) | #2A3F67 | 0.039 |
| Deuteranopia (no green cones) | #2B3E64 | 0.038 |
| Tritanopia (no blue cones) | #3A4049 | 0.062 |
| Achromatopsia (no color) | #3F3F3F | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423865
#423865
oklch(37.3% 0.076 292.5)
- #41440A
#41440A
oklch(37.2% 0.076 112.6)
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 #423865, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.065
- Twilight Blue #0A437A ΔE 0.070
- Dark Blue Grey #1F3B4D ΔE 0.070
- Charcoal #264653 ΔE 0.071
- Onyx #343A40 ΔE 0.073
- Marine Blue #01386A ΔE 0.074
Use #423865 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.