#312366
Closest named color: Midnight Blue (#191970). oklch(31.5% 0.112 287.8), rgb(49, 35, 102).
Aa
White text reads best on this color (13.43:1).
About this color
#312366 is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.112 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.053 away. White text reads best on it, at 13.43:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.56:1 |
| White text | 13.43:1 |
Values
| HEX | #312366 |
| RGB | rgb(49, 35, 102) |
| HSL | hsl(253, 49%, 27%) |
| OKLCH | oklch(31.5% 0.112 287.8) |
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 #312366 | 13.43:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #312366 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #312366 text on white | 13.43:1 | AAA | Lc 99.6 | Preferred for body text |
| #312366 text on black | 1.56:1 | 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 950.
-
Step 50
50
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D6D4FF
oklch(88.5% 0.059 287.3)
-
Step 300
300
#BDB7FF
oklch(81% 0.101 287.7)
-
Step 400
400
#9D8DFF
oklch(70.7% 0.163 287.9)
-
Step 500
500
#886BFF
oklch(63.2% 0.21 287.8)
-
Step 600
600
#763EFF
oklch(55.6% 0.262 287.8)
-
Step 700
700
#670FEE
oklch(49.1% 0.274 288)
-
Step 800
800
#5318C0
oklch(42.7% 0.227 287.9)
-
Step 900
900
#432197
oklch(37.6% 0.177 287.8)
-
Step 950
950 (this color)
#312366
oklch(31.5% 0.112 287.8)
#312366 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) | #003068 | 0.060 |
| Deuteranopia (no green cones) | #002D65 | 0.059 |
| Tritanopia (no blue cones) | #1F3341 | 0.092 |
| Achromatopsia (no color) | #2F2F2F | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312366
#312366
oklch(31.5% 0.112 287.8)
- #353400
#353400
oklch(31.6% 0.068 108.6)
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 #312366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.053
- Marine #042E60 ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.065
- Marine Blue #01386A ΔE 0.070
- Royal Purple #4B006E ΔE 0.071
- Space Cadet #2B2D42 ΔE 0.076
- Dark Indigo #1F0954 ΔE 0.077
- Indigo #4B0082 ΔE 0.079
Use #312366 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.