#143376
Closest named color: Marine Blue (#01386A). oklch(34.2% 0.121 262.9), rgb(20, 51, 118).
Aa
White text reads best on this color (11.89:1).
About this color
#143376 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.121 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.028 away. White text reads best on it, at 11.89:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #143376 |
| RGB | rgb(20, 51, 118) |
| HSL | hsl(221, 71%, 27%) |
| OKLCH | oklch(34.2% 0.121 262.9) |
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 #143376 | 11.89:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #143376 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #143376 text on white | 11.89:1 | AAA | Lc 96.8 | Preferred for body text |
| #143376 text on black | 1.76:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FC
oklch(80.9% 0.091 263)
-
Step 400
400
#6F9EFB
oklch(70.7% 0.146 262.9)
-
Step 500
500
#4A83F8
oklch(63.2% 0.185 262.7)
-
Step 600
600
#2E68E7
oklch(55.5% 0.202 263)
-
Step 700
700
#2256C9
oklch(49.2% 0.188 263)
-
Step 800
800
#1D47A2
oklch(42.7% 0.155 262.9)
-
Step 900
900 (this color)
#143376
oklch(34.2% 0.121 262.9)
-
Step 950
950
#11244B
oklch(26.9% 0.077 262.8)
#143376 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) | #003C78 | 0.025 |
| Deuteranopia (no green cones) | #003375 | 0.013 |
| Tritanopia (no blue cones) | #00444F | 0.095 |
| Achromatopsia (no color) | #373737 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143376
#143376
oklch(34.2% 0.121 262.9)
- #4A3400
#4A3400
oklch(34.1% 0.07 82.4)
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 #143376, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.028
- Marine #042E60 ΔE 0.044
- Twilight Blue #0A437A ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.056
- Midnight Blue #191970 ΔE 0.063
- Cobalt #1E488F ΔE 0.072
- Royal #0C1793 ΔE 0.075
- Dark Blue Grey #1F3B4D ΔE 0.081
Use #143376 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.