#423360
Closest named color: Prussian Blue (#1D3557). oklch(35.9% 0.077 297.8), rgb(66, 51, 96).
Aa
White text reads best on this color (11.20:1).
About this color
#423360 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.077 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.060 away. White text reads best on it, at 11.20:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.87:1 |
| White text | 11.20:1 |
Values
| HEX | #423360 |
| RGB | rgb(66, 51, 96) |
| HSL | hsl(260, 31%, 29%) |
| OKLCH | oklch(35.9% 0.077 297.8) |
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 #423360 | 11.20:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #423360 | 1.87:1 | Fails | Lc 8.1 | Not readable |
| #423360 text on white | 11.20:1 | AAA | Lc 95.8 | Preferred for body text |
| #423360 text on black | 1.87:1 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DBD5EC
oklch(88.5% 0.032 297.7)
-
Step 300
300
#C4B9E2
oklch(80.8% 0.058 297.4)
-
Step 400
400
#A794D3
oklch(70.6% 0.093 297.8)
-
Step 500
500
#9279C8
oklch(63.2% 0.118 297.5)
-
Step 600
600
#7D60B4
oklch(55.5% 0.129 298)
-
Step 700
700
#694F9B
oklch(49% 0.12 297.6)
-
Step 800
800
#56417E
oklch(42.7% 0.1 297.9)
-
Step 900
900 (this color)
#423360
oklch(35.9% 0.077 297.8)
-
Step 950
950
#29213B
oklch(27% 0.048 297.2)
#423360 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) | #263B62 | 0.047 |
| Deuteranopia (no green cones) | #293B5F | 0.044 |
| Tritanopia (no blue cones) | #3C3B45 | 0.060 |
| Achromatopsia (no color) | #3B3B3B | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423360
#423360
oklch(35.9% 0.077 297.8)
- #3A4208
#3A4208
oklch(36% 0.077 117.6)
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 #423360, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.069
- Dark Blue Grey #1F3B4D ΔE 0.070
- Onyx #343A40 ΔE 0.071
- Gunmetal #293241 ΔE 0.072
- Marine Blue #01386A ΔE 0.075
- Dark Slate Blue #483D8B ΔE 0.075
Use #423360 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.