#312C57
Closest named color: Prussian Blue (#1D3557). oklch(32.1% 0.075 286.7), rgb(49, 44, 87).
Aa
White text reads best on this color (12.89:1).
About this color
#312C57 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.075 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.037 away. White text reads best on it, at 12.89:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.62:1 |
| White text | 12.89:1 |
Values
| HEX | #312C57 |
| RGB | rgb(49, 44, 87) |
| HSL | hsl(247, 33%, 26%) |
| OKLCH | oklch(32.1% 0.075 286.7) |
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 #312C57 | 12.89:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #312C57 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #312C57 text on white | 12.89:1 | AAA | Lc 99.0 | Preferred for body text |
| #312C57 text on black | 1.62:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5F9
oklch(88.5% 0.049 286.6)
-
Step 300
300
#BCB8F8
oklch(80.8% 0.09 287.1)
-
Step 400
400
#9B91F4
oklch(70.7% 0.142 286.8)
-
Step 500
500
#8572EF
oklch(63% 0.181 287)
-
Step 600
600
#7057DE
oklch(55.6% 0.197 286.6)
-
Step 700
700
#5E46C1
oklch(49.1% 0.183 286.5)
-
Step 800
800
#4D3A9C
oklch(42.7% 0.152 287)
-
Step 900
900
#3F347C
oklch(37.8% 0.118 286.3)
-
Step 950
950 (this color)
#312C57
oklch(32.1% 0.075 286.7)
#312C57 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) | #1C3359 | 0.035 |
| Deuteranopia (no green cones) | #1B3056 | 0.034 |
| Tritanopia (no blue cones) | #26353D | 0.064 |
| Achromatopsia (no color) | #323232 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312C57
#312C57
oklch(32.1% 0.075 286.7)
- #383500
#383500
oklch(32.2% 0.069 106.2)
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 #312C57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.041
- Gunmetal #293241 ΔE 0.050
- Marine #042E60 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.059
- Marine Blue #01386A ΔE 0.061
- Oxford Blue #1B263B ΔE 0.066
- Onyx #343A40 ΔE 0.069
Use #312C57 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.