#312D67
Closest named color: Prussian Blue (#1D3557). oklch(33.5% 0.098 282.8), rgb(49, 45, 103).
Aa
White text reads best on this color (12.33:1).
About this color
#312D67 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.098 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.048 away. White text reads best on it, at 12.33:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.33:1 |
Values
| HEX | #312D67 |
| RGB | rgb(49, 45, 103) |
| HSL | hsl(244, 39%, 29%) |
| OKLCH | oklch(33.5% 0.098 282.8) |
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 #312D67 | 12.33:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #312D67 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #312D67 text on white | 12.33:1 | AAA | Lc 97.9 | Preferred for body text |
| #312D67 text on black | 1.70:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E8F8
oklch(93.5% 0.022 283.1)
-
Step 200
200
#D5D6F4
oklch(88.5% 0.041 284)
-
Step 300
300
#B9BBF0
oklch(80.9% 0.075 282.9)
-
Step 400
400
#9696E8
oklch(70.6% 0.119 282.9)
-
Step 500
500
#7E7AE1
oklch(63% 0.152 282.9)
-
Step 600
600
#6961CF
oklch(55.7% 0.164 282.9)
-
Step 700
700
#5750B3
oklch(49.2% 0.152 282.4)
-
Step 800
800
#474291
oklch(42.7% 0.126 282.5)
-
Step 900
900 (this color)
#312D67
oklch(33.5% 0.098 282.8)
-
Step 950
950
#232144
oklch(27% 0.064 283.9)
#312D67 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) | #0E3769 | 0.046 |
| Deuteranopia (no green cones) | #0A3366 | 0.046 |
| Tritanopia (no blue cones) | #1D3A45 | 0.085 |
| Achromatopsia (no color) | #353535 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312D67
#312D67
oklch(33.5% 0.098 282.8)
- #3E3800
#3E3800
oklch(33.6% 0.071 102.8)
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 #312D67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.048
- Marine Blue #01386A ΔE 0.053
- Marine #042E60 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.068
- Midnight Blue #191970 ΔE 0.068
- Twilight Blue #0A437A ΔE 0.071
- Dark Blue Grey #1F3B4D ΔE 0.073
- Gunmetal #293241 ΔE 0.075
Use #312D67 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.