#312566
Closest named color: Midnight Blue (#191970). oklch(31.9% 0.109 286.9), rgb(49, 37, 102).
Aa
White text reads best on this color (13.23:1).
About this color
#312566 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.109 and its hue 287°. 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 13.23:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.58:1 |
| White text | 13.23:1 |
Values
| HEX | #312566 |
| RGB | rgb(49, 37, 102) |
| HSL | hsl(251, 47%, 27%) |
| OKLCH | oklch(31.9% 0.109 286.9) |
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 #312566 | 13.23:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #312566 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #312566 text on white | 13.23:1 | AAA | Lc 99.3 | Preferred for body text |
| #312566 text on black | 1.58:1 | 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 950.
-
Step 50
50
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D6D4FF
oklch(88.5% 0.059 287.3)
-
Step 300
300
#BCB7FF
oklch(80.9% 0.101 287.1)
-
Step 400
400
#9B8EFF
oklch(70.7% 0.161 286.8)
-
Step 500
500
#866CFF
oklch(63.2% 0.209 286.9)
-
Step 600
600
#7440FF
oklch(55.6% 0.26 287)
-
Step 700
700
#641BEC
oklch(49.1% 0.268 286.8)
-
Step 800
800
#511EBE
oklch(42.7% 0.221 287)
-
Step 900
900
#422496
oklch(37.8% 0.173 287)
-
Step 950
950 (this color)
#312566
oklch(31.9% 0.109 286.9)
#312566 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) | #003168 | 0.059 |
| Deuteranopia (no green cones) | #002E65 | 0.058 |
| Tritanopia (no blue cones) | #1F3441 | 0.091 |
| Achromatopsia (no color) | #303030 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312566
#312566
oklch(31.9% 0.109 286.9)
- #373400
#373400
oklch(31.8% 0.068 106.1)
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 #312566, 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 0.057
- Prussian Blue #1D3557 ΔE 0.061
- Marine Blue #01386A ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.073
- Royal Purple #4B006E ΔE 0.074
- Dark Indigo #1F0954 ΔE 0.081
- Indigo #4B0082 ΔE 0.081
Use #312566 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.