#143F86
Closest named color: Twilight Blue (#0A437A). oklch(38.3% 0.128 260.1), rgb(20, 63, 134).
Aa
White text reads best on this color (10.07:1).
About this color
#143F86 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.128 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.025 away. White text reads best on it, at 10.07:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #143F86 |
| RGB | rgb(20, 63, 134) |
| HSL | hsl(217, 74%, 30%) |
| OKLCH | oklch(38.3% 0.128 260.1) |
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 #143F86 | 10.07:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #143F86 | 2.08:1 | Fails | Lc 11.1 | Not readable |
| #143F86 text on white | 10.07:1 | AAA | Lc 92.9 | Preferred for body text |
| #143F86 text on black | 2.08:1 | Fails | Lc -9.6 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFD
oklch(88.4% 0.054 260.6)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#669FFF
oklch(70.7% 0.154 260.3)
-
Step 500
500
#3A83FE
oklch(63% 0.197 260.2)
-
Step 600
600
#1369ED
oklch(55.6% 0.214 260)
-
Step 700
700
#0356CE
oklch(49% 0.199 260.1)
-
Step 800
800
#0A47A7
oklch(42.6% 0.165 260.3)
-
Step 900
900 (this color)
#143F86
oklch(38.3% 0.128 260.1)
-
Step 950
950
#0C254D
oklch(27.1% 0.08 259.5)
#143F86 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) | #0E4789 | 0.022 |
| Deuteranopia (no green cones) | #003D85 | 0.013 |
| Tritanopia (no blue cones) | #00505C | 0.098 |
| Achromatopsia (no color) | #424242 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143F86
#143F86
oklch(38.3% 0.128 260.1)
- #593D00
#593D00
oklch(38.2% 0.079 79.4)
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 #143F86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.025
- Cobalt #1E488F ΔE 0.031
- Light Navy #155084 ΔE 0.051
- Marine Blue #01386A ΔE 0.053
- Dusk Blue #26538D ΔE 0.062
- Deep Sea Blue #015482 ΔE 0.062
- Sapphire #2138AB ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.065
Use #143F86 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.