#312C7C
Closest named color: Marine Blue (#01386A). oklch(35.1% 0.131 280), rgb(49, 44, 124).
Aa
White text reads best on this color (11.78:1).
About this color
#312C7C is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.131 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.064 away. White text reads best on it, at 11.78:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.78:1 |
Values
| HEX | #312C7C |
| RGB | rgb(49, 44, 124) |
| HSL | hsl(244, 48%, 33%) |
| OKLCH | oklch(35.1% 0.131 280) |
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 #312C7C | 11.78:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #312C7C | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #312C7C text on white | 11.78:1 | AAA | Lc 96.6 | Preferred for body text |
| #312C7C text on black | 1.78:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D1D6FD
oklch(88.5% 0.054 279.5)
-
Step 300
300
#B4BAFF
oklch(80.9% 0.098 280.1)
-
Step 400
400
#8F93FF
oklch(70.7% 0.156 280)
-
Step 500
500
#7673FE
oklch(63.1% 0.201 279.9)
-
Step 600
600
#6256ED
oklch(55.5% 0.218 280.1)
-
Step 700
700
#5245CF
oklch(49.1% 0.204 280.1)
-
Step 800
800
#423AA7
oklch(42.7% 0.168 279.8)
-
Step 900
900 (this color)
#312C7C
oklch(35.1% 0.131 280)
-
Step 950
950
#201F4D
oklch(26.9% 0.083 280.3)
#312C7C 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) | #003B7F | 0.054 |
| Deuteranopia (no green cones) | #00357A | 0.050 |
| Tritanopia (no blue cones) | #02404F | 0.114 |
| Achromatopsia (no color) | #383838 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312C7C
#312C7C
oklch(35.1% 0.131 280)
- #443B00
#443B00
oklch(35.1% 0.073 99.7)
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 #312C7C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.065
- Midnight Blue #191970 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.068
- Marine #042E60 ΔE 0.072
- Indigo #4B0082 ΔE 0.076
- Prussian Blue #1D3557 ΔE 0.077
- Royal #0C1793 ΔE 0.077
Use #312C7C 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.