#323666
Closest named color: Prussian Blue (#1D3557). oklch(35.5% 0.083 277.7), rgb(50, 54, 102).
Aa
White text reads best on this color (11.31:1).
About this color
#323666 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.083 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.041 away. White text reads best on it, at 11.31:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.85:1 |
| White text | 11.31:1 |
Values
| HEX | #323666 |
| RGB | rgb(50, 54, 102) |
| HSL | hsl(235, 34%, 30%) |
| OKLCH | oklch(35.5% 0.083 277.7) |
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 #323666 | 11.31:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #323666 | 1.85:1 | Fails | Lc 7.9 | Not readable |
| #323666 text on white | 11.31:1 | AAA | Lc 96.0 | Preferred for body text |
| #323666 text on black | 1.85:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D3D8F0
oklch(88.6% 0.033 276.3)
-
Step 300
300
#B6BDE9
oklch(80.8% 0.063 277.8)
-
Step 400
400
#929BDE
oklch(70.8% 0.098 277.7)
-
Step 500
500
#7880D5
oklch(63.1% 0.127 278)
-
Step 600
600
#6268C2
oklch(55.6% 0.138 278)
-
Step 700
700
#5156A8
oklch(49.1% 0.129 277.9)
-
Step 800
800
#424788
oklch(42.7% 0.106 277.6)
-
Step 900
900 (this color)
#323666
oklch(35.5% 0.083 277.7)
-
Step 950
950
#202340
oklch(26.9% 0.054 277.6)
#323666 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) | #233C68 | 0.025 |
| Deuteranopia (no green cones) | #1E3865 | 0.027 |
| Tritanopia (no blue cones) | #1F4049 | 0.072 |
| Achromatopsia (no color) | #3A3A3A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323666
#323666
oklch(35.5% 0.083 277.7)
- #463B00
#463B00
oklch(35.3% 0.073 97.4)
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 #323666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.041
- Marine Blue #01386A ΔE 0.047
- Twilight Blue #0A437A ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.058
- Marine #042E60 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.067
- Gunmetal #293241 ΔE 0.067
Use #323666 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.