#143774
Closest named color: Marine Blue (#01386A). oklch(35% 0.113 260.7), rgb(20, 55, 116).
Aa
White text reads best on this color (11.48:1).
About this color
#143774 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.113 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.022 away. White text reads best on it, at 11.48:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.82:1 |
| White text | 11.48:1 |
Values
| HEX | #143774 |
| RGB | rgb(20, 55, 116) |
| HSL | hsl(218, 71%, 27%) |
| OKLCH | oklch(35% 0.113 260.7) |
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 #143774 | 11.48:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #143774 | 1.82:1 | Fails | Lc 7.9 | Not readable |
| #143774 text on white | 11.48:1 | AAA | Lc 96.0 | Preferred for body text |
| #143774 text on black | 1.82:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F8
oklch(81% 0.084 260.7)
-
Step 400
400
#6FA0F4
oklch(70.7% 0.135 260.7)
-
Step 500
500
#4885F0
oklch(63% 0.173 260.7)
-
Step 600
600
#2A6CDF
oklch(55.6% 0.188 260.7)
-
Step 700
700
#1D59C1
oklch(49% 0.174 260.7)
-
Step 800
800
#1A4A9C
oklch(42.7% 0.144 260.5)
-
Step 900
900 (this color)
#143774
oklch(35% 0.113 260.7)
-
Step 950
950
#112549
oklch(27% 0.072 261.1)
#143774 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) | #113E76 | 0.020 |
| Deuteranopia (no green cones) | #003573 | 0.015 |
| Tritanopia (no blue cones) | #004650 | 0.087 |
| Achromatopsia (no color) | #393939 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #143774
#143774
oklch(35% 0.113 260.7)
- #4E3600
#4E3600
oklch(35.1% 0.073 81)
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 #143774, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.022
- Twilight Blue #0A437A ΔE 0.035
- Marine #042E60 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.050
- Cobalt #1E488F ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.073
- Midnight Blue #191970 ΔE 0.074
- Dark Grey Blue #29465B ΔE 0.074
Use #143774 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.