#312E65
Closest named color: Prussian Blue (#1D3557). oklch(33.6% 0.094 282.6), rgb(49, 46, 101).
Aa
White text reads best on this color (12.28:1).
About this color
#312E65 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.094 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.044 away. White text reads best on it, at 12.28:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.28:1 |
Values
| HEX | #312E65 |
| RGB | rgb(49, 46, 101) |
| HSL | hsl(243, 37%, 29%) |
| OKLCH | oklch(33.6% 0.094 282.6) |
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 #312E65 | 12.28:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #312E65 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #312E65 text on white | 12.28:1 | AAA | Lc 97.8 | Preferred for body text |
| #312E65 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
#D5D6F3
oklch(88.4% 0.04 284)
-
Step 300
300
#B9BCEE
oklch(81% 0.07 282)
-
Step 400
400
#9697E5
oklch(70.7% 0.113 282.5)
-
Step 500
500
#7E7CDD
oklch(63.2% 0.143 282.4)
-
Step 600
600
#6863CB
oklch(55.7% 0.156 282.2)
-
Step 700
700
#5751AF
oklch(49.1% 0.145 282.5)
-
Step 800
800
#47438E
oklch(42.7% 0.12 282.4)
-
Step 900
900 (this color)
#312E65
oklch(33.6% 0.094 282.6)
-
Step 950
950
#222242
oklch(27% 0.059 281.7)
#312E65 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) | #143767 | 0.041 |
| Deuteranopia (no green cones) | #103364 | 0.042 |
| Tritanopia (no blue cones) | #1E3A44 | 0.081 |
| Achromatopsia (no color) | #353535 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312E65
#312E65
oklch(33.6% 0.094 282.6)
- #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 #312E65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.044
- Marine Blue #01386A ΔE 0.052
- Marine #042E60 ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.069
- Gunmetal #293241 ΔE 0.070
- Twilight Blue #0A437A ΔE 0.070
- Midnight Blue #191970 ΔE 0.072
Use #312E65 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.