#333351
Closest named color: Prussian Blue (#1D3557). oklch(33.5% 0.052 283.2), rgb(51, 51, 81).
Aa
White text reads best on this color (12.11:1).
About this color
#333351 is a dark, muted purple. In OKLCH its lightness is 34%, its chroma 0.052 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.032 away. White text reads best on it, at 12.11:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.73:1 |
| White text | 12.11:1 |
Values
| HEX | #333351 |
| RGB | rgb(51, 51, 81) |
| HSL | hsl(240, 23%, 26%) |
| OKLCH | oklch(33.5% 0.052 283.2) |
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 #333351 | 12.11:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #333351 | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #333351 text on white | 12.11:1 | AAA | Lc 97.7 | Preferred for body text |
| #333351 text on black | 1.73:1 | 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
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D7D8E8
oklch(88.6% 0.022 283.1)
-
Step 300
300
#BCBEDA
oklch(80.9% 0.039 282.2)
-
Step 400
400
#9B9CC7
oklch(70.7% 0.063 283.6)
-
Step 500
500
#8283B9
oklch(63% 0.081 283)
-
Step 600
600
#6C6CA5
oklch(55.5% 0.088 283.2)
-
Step 700
700
#5A5A8D
oklch(49% 0.081 283)
-
Step 800
800
#4A4A73
oklch(42.7% 0.067 283.2)
-
Step 900
900 (this color)
#333351
oklch(33.5% 0.052 283.2)
-
Step 950
950
#242436
oklch(26.9% 0.033 283.9)
#333351 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 | 0.017 |
| Deuteranopia (no green cones) | #293550 | 0.017 |
| Tritanopia (no blue cones) | #2B393E | 0.046 |
| Achromatopsia (no color) | #363636 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333351
#333351
oklch(33.5% 0.052 283.2)
- #3C3815
#3C3815
oklch(33.6% 0.053 102.8)
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 #333351, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.034
- Gunmetal #293241 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.038
- Onyx #343A40 ΔE 0.043
- Midnight Green #073B4C ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.059
- Charcoal #264653 ΔE 0.061
Use #333351 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.