#312F60
Closest named color: Prussian Blue (#1D3557). oklch(33.4% 0.084 282.7), rgb(49, 47, 96).
Aa
White text reads best on this color (12.30:1).
About this color
#312F60 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.084 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.038 away. White text reads best on it, at 12.30:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.30:1 |
Values
| HEX | #312F60 |
| RGB | rgb(49, 47, 96) |
| HSL | hsl(242, 34%, 28%) |
| OKLCH | oklch(33.4% 0.084 282.7) |
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 #312F60 | 12.30:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #312F60 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #312F60 text on white | 12.30:1 | AAA | Lc 97.9 | Preferred for body text |
| #312F60 text on black | 1.70:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D5D7F0
oklch(88.5% 0.034 282)
-
Step 300
300
#BABCE9
oklch(80.9% 0.063 282.9)
-
Step 400
400
#9798DE
oklch(70.6% 0.102 282.8)
-
Step 500
500
#7F7ED5
oklch(63.2% 0.129 282.6)
-
Step 600
600
#6965C2
oklch(55.5% 0.141 282.7)
-
Step 700
700
#5854A8
oklch(49.2% 0.131 282.6)
-
Step 800
800
#484588
oklch(42.8% 0.108 282.8)
-
Step 900
900 (this color)
#312F60
oklch(33.4% 0.084 282.7)
-
Step 950
950
#232340
oklch(27.2% 0.053 282.3)
#312F60 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) | #1A3662 | 0.035 |
| Deuteranopia (no green cones) | #18335F | 0.035 |
| Tritanopia (no blue cones) | #213943 | 0.071 |
| Achromatopsia (no color) | #353535 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312F60
#312F60
oklch(33.4% 0.084 282.7)
- #3D3700
#3D3700
oklch(33.3% 0.07 102.7)
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 #312F60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.038
- Marine Blue #01386A ΔE 0.052
- Marine #042E60 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.061
- Gunmetal #293241 ΔE 0.061
- Midnight Green #073B4C ΔE 0.072
- Twilight Blue #0A437A ΔE 0.072
Use #312F60 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.