#312E58
Closest named color: Prussian Blue (#1D3557). oklch(32.6% 0.073 284.8), rgb(49, 46, 88).
Aa
White text reads best on this color (12.63:1).
About this color
#312E58 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.073 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.034 away. White text reads best on it, at 12.63:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.66:1 |
| White text | 12.63:1 |
Values
| HEX | #312E58 |
| RGB | rgb(49, 46, 88) |
| HSL | hsl(244, 31%, 26%) |
| OKLCH | oklch(32.6% 0.073 284.8) |
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 #312E58 | 12.63:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #312E58 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #312E58 text on white | 12.63:1 | AAA | Lc 98.5 | Preferred for body text |
| #312E58 text on black | 1.66:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D6D7ED
oklch(88.5% 0.03 283.7)
-
Step 300
300
#BCBCE3
oklch(80.8% 0.055 285.1)
-
Step 400
400
#9A99D5
oklch(70.6% 0.087 284.7)
-
Step 500
500
#837FCA
oklch(63.1% 0.111 285.2)
-
Step 600
600
#6D67B7
oklch(55.6% 0.122 285.1)
-
Step 700
700
#5B559E
oklch(49% 0.114 285.1)
-
Step 800
800
#4A4680
oklch(42.6% 0.094 284.8)
-
Step 900
900 (this color)
#312E58
oklch(32.6% 0.073 284.8)
-
Step 950
950
#24233C
oklch(27% 0.046 284.7)
#312E58 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) | #1F345A | 0.030 |
| Deuteranopia (no green cones) | #1D3257 | 0.031 |
| Tritanopia (no blue cones) | #26363E | 0.062 |
| Achromatopsia (no color) | #333333 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312E58
#312E58
oklch(32.6% 0.073 284.8)
- #3A3600
#3A3600
oklch(32.7% 0.069 105)
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 #312E58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.041
- Gunmetal #293241 ΔE 0.049
- Marine #042E60 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Marine Blue #01386A ΔE 0.058
- Onyx #343A40 ΔE 0.066
- Midnight Green #073B4C ΔE 0.066
Use #312E58 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.