#043364
Closest named color: Marine (#042E60). oklch(32.3% 0.099 254.2), rgb(4, 51, 100).
Aa
White text reads best on this color (12.62:1).
About this color
#043364 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.099 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.016 away. White text reads best on it, at 12.62:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.66:1 |
| White text | 12.62:1 |
Values
| HEX | #043364 |
| RGB | rgb(4, 51, 100) |
| HSL | hsl(211, 92%, 20%) |
| OKLCH | oklch(32.3% 0.099 254.2) |
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 #043364 | 12.62:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #043364 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #043364 text on white | 12.62:1 | AAA | Lc 98.1 | Preferred for body text |
| #043364 text on black | 1.66:1 | 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
#DCECFF
oklch(93.7% 0.031 252.7)
-
Step 200
200
#C0DCFF
oklch(88.5% 0.057 254.1)
-
Step 300
300
#95C4FF
oklch(80.9% 0.098 254.5)
-
Step 400
400
#55A3FF
oklch(70.8% 0.156 254)
-
Step 500
500
#0088FF
oklch(63.2% 0.202 254.1)
-
Step 600
600
#0072D8
oklch(55.7% 0.178 254.2)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#00417F
oklch(37.8% 0.12 253.9)
-
Step 950
950 (this color)
#043364
oklch(32.3% 0.099 254.2)
#043364 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) | #183766 | 0.021 |
| Deuteranopia (no green cones) | #002F63 | 0.013 |
| Tritanopia (no blue cones) | #003F46 | 0.074 |
| Achromatopsia (no color) | #333333 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043364
#043364
oklch(32.3% 0.099 254.2)
- #482D00
#482D00
oklch(32.2% 0.068 73.6)
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 #043364, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.016
- Marine Blue #01386A ΔE 0.017
- Prussian Blue #1D3557 ΔE 0.031
- Midnight Green #073B4C ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.058
- Twilight Blue #0A437A ΔE 0.059
- Midnight Blue #191970 ΔE 0.069
- Space Cadet #2B2D42 ΔE 0.069
Use #043364 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.