#312A69
Closest named color: Prussian Blue (#1D3557). oklch(33.1% 0.106 284), rgb(49, 42, 105).
Aa
White text reads best on this color (12.60:1).
About this color
#312A69 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.106 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.055 away. White text reads best on it, at 12.60:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.66:1 |
| White text | 12.60:1 |
Values
| HEX | #312A69 |
| RGB | rgb(49, 42, 105) |
| HSL | hsl(247, 43%, 29%) |
| OKLCH | oklch(33.1% 0.106 284) |
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 #312A69 | 12.60:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #312A69 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #312A69 text on white | 12.60:1 | AAA | Lc 98.3 | Preferred for body text |
| #312A69 text on black | 1.66:1 | 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
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D5D6F6
oklch(88.5% 0.044 284)
-
Step 300
300
#BABAF3
oklch(80.9% 0.08 284.5)
-
Step 400
400
#9795ED
oklch(70.7% 0.127 283.7)
-
Step 500
500
#8078E7
oklch(63.2% 0.162 284)
-
Step 600
600
#6B5ED5
oklch(55.7% 0.176 284)
-
Step 700
700
#594CB9
oklch(49.1% 0.165 283.9)
-
Step 800
800
#493F95
oklch(42.6% 0.136 284.3)
-
Step 900
900 (this color)
#312A69
oklch(33.1% 0.106 284)
-
Step 950
950
#232146
oklch(27.1% 0.067 283.4)
#312A69 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) | #00356B | 0.055 |
| Deuteranopia (no green cones) | #003168 | 0.053 |
| Tritanopia (no blue cones) | #1C3845 | 0.089 |
| Achromatopsia (no color) | #333333 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312A69
#312A69
oklch(33.1% 0.106 284)
- #3C3700
#3C3700
oklch(33.1% 0.07 103.9)
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 #312A69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.055
- Marine #042E60 ΔE 0.055
- Marine Blue #01386A ΔE 0.058
- Midnight Blue #191970 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.073
- Twilight Blue #0A437A ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.081
- Gunmetal #293241 ΔE 0.081
Use #312A69 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.