#323D7B
Closest named color: Twilight Blue (#0A437A). oklch(38.5% 0.105 272.9), rgb(50, 61, 123).
Aa
White text reads best on this color (10.05:1).
About this color
#323D7B is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.105 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.038 away. White text reads best on it, at 10.05:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #323D7B |
| RGB | rgb(50, 61, 123) |
| HSL | hsl(231, 42%, 34%) |
| OKLCH | oklch(38.5% 0.105 272.9) |
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 #323D7B | 10.05:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #323D7B | 2.08:1 | Fails | Lc 10.8 | Not readable |
| #323D7B text on white | 10.05:1 | AAA | Lc 93.1 | Preferred for body text |
| #323D7B text on black | 2.08:1 | Fails | Lc -9.4 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F7
oklch(88.5% 0.044 272.7)
-
Step 300
300
#AFBEF4
oklch(80.9% 0.078 272.5)
-
Step 400
400
#879AEF
oklch(70.7% 0.126 273.2)
-
Step 500
500
#6B7FEA
oklch(63.2% 0.161 273)
-
Step 600
600
#5465D8
oklch(55.6% 0.176 273)
-
Step 700
700
#4553BB
oklch(49% 0.163 273.1)
-
Step 800
800
#384598
oklch(42.8% 0.136 272.6)
-
Step 900
900 (this color)
#323D7B
oklch(38.5% 0.105 272.9)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#323D7B 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) | #1F457D | 0.028 |
| Deuteranopia (no green cones) | #133F7A | 0.032 |
| Tritanopia (no blue cones) | #034B56 | 0.093 |
| Achromatopsia (no color) | #424242 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323D7B
#323D7B
oklch(38.5% 0.105 272.9)
- #524200
#524200
oklch(38.5% 0.079 93.2)
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 #323D7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.044
- Cobalt #1E488F ΔE 0.044
- Blueberry #464196 ΔE 0.056
- Light Navy #155084 ΔE 0.056
- Marine Blue #01386A ΔE 0.059
- Dusk Blue #26538D ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.068
Use #323D7B 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.