#312D59
Closest named color: Prussian Blue (#1D3557). oklch(32.5% 0.076 285.5), rgb(49, 45, 89).
Aa
White text reads best on this color (12.72:1).
About this color
#312D59 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.076 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.036 away. White text reads best on it, at 12.72:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.65:1 |
| White text | 12.72:1 |
Values
| HEX | #312D59 |
| RGB | rgb(49, 45, 89) |
| HSL | hsl(245, 33%, 26%) |
| OKLCH | oklch(32.5% 0.076 285.5) |
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 #312D59 | 12.72:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #312D59 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #312D59 text on white | 12.72:1 | AAA | Lc 98.7 | Preferred for body text |
| #312D59 text on black | 1.65:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7EE
oklch(88.5% 0.031 283.8)
-
Step 300
300
#BCBCE5
oklch(80.9% 0.058 285)
-
Step 400
400
#9B99D8
oklch(70.8% 0.091 285.3)
-
Step 500
500
#837ECD
oklch(63.1% 0.117 285.4)
-
Step 600
600
#6D66BA
oklch(55.6% 0.128 285.2)
-
Step 700
700
#5C54A0
oklch(49% 0.119 286)
-
Step 800
800
#4B4582
oklch(42.7% 0.099 285.9)
-
Step 900
900 (this color)
#312D59
oklch(32.5% 0.076 285.5)
-
Step 950
950
#24233D
oklch(27.1% 0.048 284.5)
#312D59 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) | #1C345B | 0.034 |
| Deuteranopia (no green cones) | #1B3158 | 0.033 |
| Tritanopia (no blue cones) | #25363E | 0.066 |
| Achromatopsia (no color) | #333333 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312D59
#312D59
oklch(32.5% 0.076 285.5)
- #393600
#393600
oklch(32.5% 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 #312D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.052
- Marine #042E60 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.058
- Marine Blue #01386A ΔE 0.058
- Midnight Green #073B4C ΔE 0.069
- Oxford Blue #1B263B ΔE 0.069
Use #312D59 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.