#143273
Closest named color: Marine Blue (#01386A). oklch(33.8% 0.118 263), rgb(20, 50, 115).
Aa
White text reads best on this color (12.11:1).
About this color
#143273 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.118 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.026 away. White text reads best on it, at 12.11:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.73:1 |
| White text | 12.11:1 |
Values
| HEX | #143273 |
| RGB | rgb(20, 50, 115) |
| HSL | hsl(221, 70%, 26%) |
| OKLCH | oklch(33.8% 0.118 263) |
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 #143273 | 12.11:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #143273 | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #143273 text on white | 12.11:1 | AAA | Lc 97.2 | Preferred for body text |
| #143273 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
#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
#A3C1FA
oklch(80.9% 0.087 263)
-
Step 400
400
#719EF8
oklch(70.6% 0.141 263.1)
-
Step 500
500
#4C83F5
oklch(63.1% 0.181 262.9)
-
Step 600
600
#3169E4
oklch(55.6% 0.196 263.1)
-
Step 700
700
#2457C6
oklch(49.2% 0.182 262.9)
-
Step 800
800
#1F48A0
oklch(42.8% 0.15 262.9)
-
Step 900
900 (this color)
#143273
oklch(33.8% 0.118 263)
-
Step 950
950
#12244A
oklch(26.9% 0.075 263.2)
#143273 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) | #003A75 | 0.023 |
| Deuteranopia (no green cones) | #003272 | 0.013 |
| Tritanopia (no blue cones) | #00424D | 0.092 |
| Achromatopsia (no color) | #363636 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143273
#143273
oklch(33.8% 0.118 263)
- #493300
#493300
oklch(33.8% 0.07 82.1)
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 #143273, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.026
- Marine #042E60 ΔE 0.038
- Twilight Blue #0A437A ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.052
- Midnight Blue #191970 ΔE 0.060
- Royal #0C1793 ΔE 0.076
- Cobalt #1E488F ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.078
Use #143273 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.