#312759
Closest named color: Prussian Blue (#1D3557). oklch(31.2% 0.087 289.6), rgb(49, 39, 89).
Aa
White text reads best on this color (13.41:1).
About this color
#312759 is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.087 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.049 away. White text reads best on it, at 13.41:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.56:1 |
| White text | 13.41:1 |
Values
| HEX | #312759 |
| RGB | rgb(49, 39, 89) |
| HSL | hsl(252, 39%, 25%) |
| OKLCH | oklch(31.2% 0.087 289.6) |
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 #312759 | 13.41:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #312759 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #312759 text on white | 13.41:1 | AAA | Lc 99.7 | Preferred for body text |
| #312759 text on black | 1.56:1 | 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
#D8D4FD
oklch(88.6% 0.056 289.7)
-
Step 300
300
#BFB6FF
oklch(81% 0.102 289.6)
-
Step 400
400
#A08CFF
oklch(70.8% 0.164 289.5)
-
Step 500
500
#8B6AFD
oklch(63.2% 0.209 289.4)
-
Step 600
600
#784BEC
oklch(55.7% 0.228 289.7)
-
Step 700
700
#653ACD
oklch(49.1% 0.212 289.6)
-
Step 800
800
#5232A6
oklch(42.7% 0.175 289.5)
-
Step 900
900
#432E83
oklch(37.7% 0.136 289.6)
-
Step 950
950 (this color)
#312759
oklch(31.2% 0.087 289.6)
#312759 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) | #11305B | 0.048 |
| Deuteranopia (no green cones) | #122E58 | 0.046 |
| Tritanopia (no blue cones) | #26313C | 0.070 |
| Achromatopsia (no color) | #2F2F2F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312759
#312759
oklch(31.2% 0.087 289.6)
- #333300
#333300
oklch(31.1% 0.068 109.8)
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 #312759, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.050
- Marine #042E60 ΔE 0.055
- Gunmetal #293241 ΔE 0.062
- Marine Blue #01386A ΔE 0.068
- Oxford Blue #1B263B ΔE 0.068
- Midnight Blue #191970 ΔE 0.070
- Dark Blue Grey #1F3B4D ΔE 0.073
Use #312759 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.