#312959
Closest named color: Prussian Blue (#1D3557). oklch(31.6% 0.083 288.4), rgb(49, 41, 89).
Aa
White text reads best on this color (13.19:1).
About this color
#312959 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.083 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.045 away. White text reads best on it, at 13.19:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.59:1 |
| White text | 13.19:1 |
Values
| HEX | #312959 |
| RGB | rgb(49, 41, 89) |
| HSL | hsl(250, 37%, 25%) |
| OKLCH | oklch(31.6% 0.083 288.4) |
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 #312959 | 13.19:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #312959 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #312959 text on white | 13.19:1 | AAA | Lc 99.4 | Preferred for body text |
| #312959 text on black | 1.59:1 | 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
#E8E7FC
oklch(93.5% 0.028 288)
-
Step 200
200
#D7D4FC
oklch(88.5% 0.055 288.7)
-
Step 300
300
#BDB7FD
oklch(80.9% 0.098 287.9)
-
Step 400
400
#9E8EFC
oklch(70.8% 0.157 288.4)
-
Step 500
500
#886DF9
oklch(63.1% 0.2 288.1)
-
Step 600
600
#744FE8
oklch(55.5% 0.219 288.3)
-
Step 700
700
#623ECA
oklch(49.1% 0.204 288.3)
-
Step 800
800
#5035A3
oklch(42.7% 0.168 288.5)
-
Step 900
900
#413081
oklch(37.6% 0.13 288.1)
-
Step 950
950 (this color)
#312959
oklch(31.6% 0.083 288.4)
#312959 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) | #15315B | 0.043 |
| Deuteranopia (no green cones) | #152F58 | 0.042 |
| Tritanopia (no blue cones) | #26333C | 0.070 |
| Achromatopsia (no color) | #303030 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312959
#312959
oklch(31.6% 0.083 288.4)
- #353400
#353400
oklch(31.6% 0.068 108.6)
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 #312959, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Marine #042E60 ΔE 0.054
- Gunmetal #293241 ΔE 0.058
- Marine Blue #01386A ΔE 0.064
- Oxford Blue #1B263B ΔE 0.068
- Dark Blue Grey #1F3B4D ΔE 0.068
- Midnight Blue #191970 ΔE 0.073
Use #312959 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.