#312770
Closest named color: Midnight Blue (#191970). oklch(33.1% 0.121 283.8), rgb(49, 39, 112).
Aa
White text reads best on this color (12.69:1).
About this color
#312770 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.121 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.055 away. White text reads best on it, at 12.69:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.65:1 |
| White text | 12.69:1 |
Values
| HEX | #312770 |
| RGB | rgb(49, 39, 112) |
| HSL | hsl(248, 48%, 30%) |
| OKLCH | oklch(33.1% 0.121 283.8) |
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 #312770 | 12.69:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #312770 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #312770 text on white | 12.69:1 | AAA | Lc 98.4 | Preferred for body text |
| #312770 text on black | 1.65:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E7E8FB
oklch(93.6% 0.026 283.5)
-
Step 200
200
#D4D5FA
oklch(88.4% 0.051 284.1)
-
Step 300
300
#B9B9FA
oklch(80.9% 0.091 284.2)
-
Step 400
400
#9692F7
oklch(70.6% 0.145 283.8)
-
Step 500
500
#7F73F3
oklch(63% 0.185 284)
-
Step 600
600
#6B58E2
oklch(55.7% 0.201 284)
-
Step 700
700
#5947C4
oklch(49.1% 0.186 283.7)
-
Step 800
800
#493B9F
oklch(42.7% 0.155 284)
-
Step 900
900 (this color)
#312770
oklch(33.1% 0.121 283.8)
-
Step 950
950
#231F4A
oklch(27% 0.077 284.2)
#312770 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) | #003572 | 0.057 |
| Deuteranopia (no green cones) | #00306F | 0.054 |
| Tritanopia (no blue cones) | #163947 | 0.103 |
| Achromatopsia (no color) | #333333 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312770
#312770
oklch(33.1% 0.121 283.8)
- #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 #312770, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.055
- Marine #042E60 ΔE 0.062
- Marine Blue #01386A ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.067
- Indigo #4B0082 ΔE 0.075
- Royal Purple #4B006E ΔE 0.076
- Twilight Blue #0A437A ΔE 0.080
- Dark Slate Blue #483D8B ΔE 0.084
Use #312770 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.