#313351
Closest named color: Prussian Blue (#1D3557). oklch(33.4% 0.053 280.2), rgb(49, 51, 81).
Aa
White text reads best on this color (12.18:1).
About this color
#313351 is a dark, muted purple. In OKLCH its lightness is 33%, its chroma 0.053 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.029 away. White text reads best on it, at 12.18:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.72:1 |
| White text | 12.18:1 |
Values
| HEX | #313351 |
| RGB | rgb(49, 51, 81) |
| HSL | hsl(236, 25%, 25%) |
| OKLCH | oklch(33.4% 0.053 280.2) |
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 #313351 | 12.18:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #313351 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #313351 text on white | 12.18:1 | AAA | Lc 97.8 | Preferred for body text |
| #313351 text on black | 1.72:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E8
oklch(88.5% 0.022 280.3)
-
Step 300
300
#BBBEDA
oklch(80.8% 0.039 280.6)
-
Step 400
400
#989DC8
oklch(70.7% 0.063 279.5)
-
Step 500
500
#8084BA
oklch(63.1% 0.081 280.5)
-
Step 600
600
#696DA6
oklch(55.5% 0.088 280)
-
Step 700
700
#585B8E
oklch(49.1% 0.081 280.4)
-
Step 800
800
#484B73
oklch(42.8% 0.066 279.9)
-
Step 900
900 (this color)
#313351
oklch(33.4% 0.053 280.2)
-
Step 950
950
#232537
oklch(27.1% 0.034 279)
#313351 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) | #2A3752 | 0.015 |
| Deuteranopia (no green cones) | #283450 | 0.014 |
| Tritanopia (no blue cones) | #28393E | 0.047 |
| Achromatopsia (no color) | #353535 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313351
#313351
oklch(33.4% 0.053 280.2)
- #3D3714
#3D3714
oklch(33.5% 0.053 99.7)
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 #313351, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.032
- Gunmetal #293241 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.036
- Onyx #343A40 ΔE 0.044
- Midnight Green #073B4C ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.059
- Marine Blue #01386A ΔE 0.060
Use #313351 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.