#312859
Closest named color: Prussian Blue (#1D3557). oklch(31.4% 0.085 289), rgb(49, 40, 89).
Aa
White text reads best on this color (13.30:1).
About this color
#312859 is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.085 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.047 away. White text reads best on it, at 13.30:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.57:1 |
| White text | 13.30:1 |
Values
| HEX | #312859 |
| RGB | rgb(49, 40, 89) |
| HSL | hsl(251, 38%, 25%) |
| OKLCH | oklch(31.4% 0.085 289) |
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 #312859 | 13.30:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #312859 | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #312859 text on white | 13.30:1 | AAA | Lc 99.5 | Preferred for body text |
| #312859 text on black | 1.57:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D7D4FD
oklch(88.5% 0.056 288.5)
-
Step 300
300
#BEB6FE
oklch(80.9% 0.101 289)
-
Step 400
400
#9F8DFD
oklch(70.7% 0.16 289)
-
Step 500
500
#8A6BFB
oklch(63.1% 0.205 289)
-
Step 600
600
#764DEA
oklch(55.6% 0.223 289)
-
Step 700
700
#643CCC
oklch(49.1% 0.208 289.1)
-
Step 800
800
#5133A5
oklch(42.7% 0.173 289)
-
Step 900
900
#422F82
oklch(37.6% 0.133 288.9)
-
Step 950
950 (this color)
#312859
oklch(31.4% 0.085 289)
#312859 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) | #13305B | 0.045 |
| Deuteranopia (no green cones) | #142E58 | 0.043 |
| Tritanopia (no blue cones) | #26323C | 0.070 |
| Achromatopsia (no color) | #2F2F2F | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312859
#312859
oklch(31.4% 0.085 289)
- #343400
#343400
oklch(31.5% 0.069 109.8)
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 #312859, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Marine #042E60 ΔE 0.054
- Gunmetal #293241 ΔE 0.060
- Marine Blue #01386A ΔE 0.066
- Oxford Blue #1B263B ΔE 0.068
- Dark Blue Grey #1F3B4D ΔE 0.070
- Midnight Blue #191970 ΔE 0.072
Use #312859 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.