#333471
Closest named color: Marine Blue (#01386A). oklch(35.9% 0.103 279.2), rgb(51, 52, 113).
Aa
White text reads best on this color (11.22:1).
About this color
#333471 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.103 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.051 away. White text reads best on it, at 11.22:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.87:1 |
| White text | 11.22:1 |
Values
| HEX | #333471 |
| RGB | rgb(51, 52, 113) |
| HSL | hsl(239, 38%, 32%) |
| OKLCH | oklch(35.9% 0.103 279.2) |
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 #333471 | 11.22:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #333471 | 1.87:1 | Fails | Lc 8.2 | Not readable |
| #333471 text on white | 11.22:1 | AAA | Lc 95.7 | Preferred for body text |
| #333471 text on black | 1.87:1 | 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
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F6
oklch(88.5% 0.043 278.2)
-
Step 300
300
#B5BCF2
oklch(80.9% 0.077 278.8)
-
Step 400
400
#9198EC
oklch(70.8% 0.122 279.1)
-
Step 500
500
#777BE6
oklch(63% 0.158 279.2)
-
Step 600
600
#6262D4
oklch(55.6% 0.171 279.3)
-
Step 700
700
#5150B8
oklch(49.1% 0.16 279.2)
-
Step 800
800
#424295
oklch(42.6% 0.133 279.2)
-
Step 900
900 (this color)
#333471
oklch(35.9% 0.103 279.2)
-
Step 950
950
#202245
oklch(27% 0.064 278.7)
#333471 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) | #153D73 | 0.040 |
| Deuteranopia (no green cones) | #0D3870 | 0.042 |
| Tritanopia (no blue cones) | #18424D | 0.090 |
| Achromatopsia (no color) | #3B3B3B | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333471
#333471
oklch(35.9% 0.103 279.2)
- #473D00
#473D00
oklch(35.9% 0.074 98.8)
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 #333471, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.051
- Twilight Blue #0A437A ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.061
- Marine #042E60 ΔE 0.066
- Cobalt #1E488F ΔE 0.071
- Dark Grey Blue #29465B ΔE 0.074
- Blueberry #464196 ΔE 0.077
Use #333471 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.