#33316F
Closest named color: Marine Blue (#01386A). oklch(35.1% 0.104 281), rgb(51, 49, 111).
Aa
White text reads best on this color (11.60:1).
About this color
#33316F is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.104 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.052 away. White text reads best on it, at 11.60:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.80:1 |
| White text | 11.60:1 |
Values
| HEX | #33316F |
| RGB | rgb(51, 49, 111) |
| HSL | hsl(242, 39%, 31%) |
| OKLCH | oklch(35.1% 0.104 281) |
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 #33316F | 11.60:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #33316F | 1.80:1 | Fails | Lc 7.4 | Not readable |
| #33316F text on white | 11.60:1 | AAA | Lc 96.5 | Preferred for body text |
| #33316F text on black | 1.80:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D3D6F6
oklch(88.4% 0.044 281.2)
-
Step 300
300
#B7BBF3
oklch(80.8% 0.079 281.3)
-
Step 400
400
#9396ED
oklch(70.6% 0.126 281.1)
-
Step 500
500
#7B7AE7
oklch(63.2% 0.16 281.2)
-
Step 600
600
#6560D5
oklch(55.6% 0.174 281)
-
Step 700
700
#544FB8
oklch(49.1% 0.161 280.8)
-
Step 800
800
#454195
oklch(42.7% 0.134 281.2)
-
Step 900
900 (this color)
#33316F
oklch(35.1% 0.104 281)
-
Step 950
950
#212146
oklch(26.9% 0.067 280.9)
#33316F 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) | #0F3B71 | 0.045 |
| Deuteranopia (no green cones) | #08366E | 0.047 |
| Tritanopia (no blue cones) | #1B3F4B | 0.089 |
| Achromatopsia (no color) | #393939 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33316F
#33316F
oklch(35.1% 0.104 281)
- #433B00
#433B00
oklch(35% 0.073 100.8)
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 #33316F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.060
- Marine #042E60 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.067
- Midnight Blue #191970 ΔE 0.076
- Dark Blue Grey #1F3B4D ΔE 0.078
- Cobalt #1E488F ΔE 0.079
Use #33316F 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.