#312D6D
Closest named color: Marine Blue (#01386A). oklch(34% 0.108 281.8), rgb(49, 45, 109).
Aa
White text reads best on this color (12.16:1).
About this color
#312D6D is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.108 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.054 away. White text reads best on it, at 12.16:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.72:1 |
| White text | 12.16:1 |
Values
| HEX | #312D6D |
| RGB | rgb(49, 45, 109) |
| HSL | hsl(244, 42%, 30%) |
| OKLCH | oklch(34% 0.108 281.8) |
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 #312D6D | 12.16:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #312D6D | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #312D6D text on white | 12.16:1 | AAA | Lc 97.5 | Preferred for body text |
| #312D6D text on black | 1.72:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B8BBF4
oklch(81% 0.08 282.1)
-
Step 400
400
#9496EF
oklch(70.8% 0.129 281.6)
-
Step 500
500
#7C79E9
oklch(63.2% 0.164 281.8)
-
Step 600
600
#675ED7
oklch(55.5% 0.179 282.2)
-
Step 700
700
#564DBB
oklch(49.1% 0.167 282)
-
Step 800
800
#464097
oklch(42.7% 0.138 282)
-
Step 900
900 (this color)
#312D6D
oklch(34% 0.108 281.8)
-
Step 950
950
#222146
oklch(27% 0.067 282.1)
#312D6D 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) | #03386F | 0.051 |
| Deuteranopia (no green cones) | #00336C | 0.051 |
| Tritanopia (no blue cones) | #183C48 | 0.093 |
| Achromatopsia (no color) | #363636 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312D6D
#312D6D
oklch(34% 0.108 281.8)
- #403900
#403900
oklch(34.1% 0.071 101.7)
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 #312D6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.055
- Marine #042E60 ΔE 0.057
- Midnight Blue #191970 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.077
- Space Cadet #2B2D42 ΔE 0.078
- Dark Blue Grey #1F3B4D ΔE 0.080
Use #312D6D 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.