#043163
Closest named color: Marine (#042E60). oklch(31.7% 0.1 255.2), rgb(4, 49, 99).
Aa
White text reads best on this color (12.92:1).
About this color
#043163 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.100 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.010 away. White text reads best on it, at 12.92:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.62:1 |
| White text | 12.92:1 |
Values
| HEX | #043163 |
| RGB | rgb(4, 49, 99) |
| HSL | hsl(212, 92%, 20%) |
| OKLCH | oklch(31.7% 0.1 255.2) |
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 #043163 | 12.92:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #043163 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #043163 text on white | 12.92:1 | AAA | Lc 98.6 | Preferred for body text |
| #043163 text on black | 1.62:1 | 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 950.
-
Step 50
50
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DCEBFF
oklch(93.5% 0.032 255.6)
-
Step 200
200
#C1DCFF
oklch(88.6% 0.056 255)
-
Step 300
300
#96C4FF
oklch(81% 0.097 254.9)
-
Step 400
400
#58A2FF
oklch(70.7% 0.156 255.2)
-
Step 500
500
#1487FF
oklch(63.1% 0.201 255.2)
-
Step 600
600
#0070DB
oklch(55.5% 0.184 255.3)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#004082
oklch(37.8% 0.125 255.2)
-
Step 950
950 (this color)
#043163
oklch(31.7% 0.1 255.2)
#043163 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) | #143665 | 0.021 |
| Deuteranopia (no green cones) | #002E62 | 0.010 |
| Tritanopia (no blue cones) | #003D45 | 0.074 |
| Achromatopsia (no color) | #313131 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043163
#043163
oklch(31.7% 0.1 255.2)
- #452C00
#452C00
oklch(31.6% 0.067 75.3)
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 #043163, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.010
- Marine Blue #01386A ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.034
- Midnight Green #073B4C ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.061
- Midnight Blue #191970 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.068
Use #043163 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.