#323A69
Closest named color: Prussian Blue (#1D3557). oklch(36.6% 0.081 274.4), rgb(50, 58, 105).
Aa
White text reads best on this color (10.79:1).
About this color
#323A69 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.081 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.046 away. White text reads best on it, at 10.79:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.94:1 |
| White text | 10.79:1 |
Values
| HEX | #323A69 |
| RGB | rgb(50, 58, 105) |
| HSL | hsl(231, 35%, 30%) |
| OKLCH | oklch(36.6% 0.081 274.4) |
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 #323A69 | 10.79:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #323A69 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #323A69 text on white | 10.79:1 | AAA | Lc 94.9 | Preferred for body text |
| #323A69 text on black | 1.94:1 | Fails | Lc -7.7 | 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
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BEE9
oklch(80.8% 0.062 274.7)
-
Step 400
400
#8E9CDE
oklch(70.7% 0.098 274.4)
-
Step 500
500
#7382D4
oklch(63.1% 0.124 274.4)
-
Step 600
600
#5C6AC2
oklch(55.6% 0.137 274.3)
-
Step 700
700
#4C58A7
oklch(49.1% 0.126 274.3)
-
Step 800
800
#3E4887
oklch(42.6% 0.104 274.3)
-
Step 900
900 (this color)
#323A69
oklch(36.6% 0.081 274.4)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#323A69 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) | #27406B | 0.021 |
| Deuteranopia (no green cones) | #223B68 | 0.021 |
| Tritanopia (no blue cones) | #1C444C | 0.072 |
| Achromatopsia (no color) | #3D3D3D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323A69
#323A69
oklch(36.6% 0.081 274.4)
- #4B3D00
#4B3D00
oklch(36.4% 0.075 94.3)
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 #323A69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.047
- Marine Blue #01386A ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.058
- Charcoal #264653 ΔE 0.062
- Marine #042E60 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.068
Use #323A69 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.