#312B58
Closest named color: Prussian Blue (#1D3557). oklch(32% 0.078 287.2), rgb(49, 43, 88).
Aa
White text reads best on this color (12.98:1).
About this color
#312B58 is a dark, moderately saturated purple. In OKLCH its lightness is 32%, its chroma 0.078 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.040 away. White text reads best on it, at 12.98:1.
| Hue family | Purples |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.61:1 |
| White text | 12.98:1 |
Values
| HEX | #312B58 |
| RGB | rgb(49, 43, 88) |
| HSL | hsl(248, 34%, 26%) |
| OKLCH | oklch(32% 0.078 287.2) |
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 #312B58 | 12.98:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #312B58 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #312B58 text on white | 12.98:1 | AAA | Lc 99.1 | Preferred for body text |
| #312B58 text on black | 1.61:1 | 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
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5FA
oklch(88.6% 0.051 286.6)
-
Step 300
300
#BCB8FA
oklch(80.9% 0.093 286.9)
-
Step 400
400
#9C90F7
oklch(70.7% 0.148 287.3)
-
Step 500
500
#8670F4
oklch(63.1% 0.19 287.3)
-
Step 600
600
#7154E2
oklch(55.5% 0.205 287.1)
-
Step 700
700
#6043C4
oklch(49.1% 0.191 287.5)
-
Step 800
800
#4E389F
oklch(42.7% 0.159 287.5)
-
Step 900
900
#40327E
oklch(37.7% 0.123 287.4)
-
Step 950
950 (this color)
#312B58
oklch(32% 0.078 287.2)
#312B58 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) | #1A325A | 0.037 |
| Deuteranopia (no green cones) | #193057 | 0.037 |
| Tritanopia (no blue cones) | #26343D | 0.065 |
| Achromatopsia (no color) | #313131 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #312B58
#312B58
oklch(32% 0.078 287.2)
- #373500
#373500
oklch(32.1% 0.069 107.4)
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 #312B58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.043
- Marine #042E60 ΔE 0.053
- Gunmetal #293241 ΔE 0.053
- Marine Blue #01386A ΔE 0.062
- Dark Blue Grey #1F3B4D ΔE 0.062
- Oxford Blue #1B263B ΔE 0.067
- Midnight Green #073B4C ΔE 0.072
Use #312B58 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.