#043276
Closest named color: Marine Blue (#01386A). oklch(33.6% 0.126 259.4), rgb(4, 50, 118).
Aa
White text reads best on this color (12.18:1).
About this color
#043276 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.126 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.028 away. White text reads best on it, at 12.18:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.72:1 |
| White text | 12.18:1 |
Values
| HEX | #043276 |
| RGB | rgb(4, 50, 118) |
| HSL | hsl(216, 93%, 24%) |
| OKLCH | oklch(33.6% 0.126 259.4) |
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 #043276 | 12.18:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #043276 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #043276 text on white | 12.18:1 | AAA | Lc 97.2 | Preferred for body text |
| #043276 text on black | 1.72:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFD
oklch(88.6% 0.053 259)
-
Step 300
300
#9CC2FE
oklch(80.9% 0.095 259.4)
-
Step 400
400
#65A0FE
oklch(70.8% 0.152 259.3)
-
Step 500
500
#3984FC
oklch(63.1% 0.194 259.6)
-
Step 600
600
#0F6AEB
oklch(55.6% 0.21 259.4)
-
Step 700
700
#0058CC
oklch(49.2% 0.194 259.3)
-
Step 800
800
#0748A5
oklch(42.6% 0.162 259.5)
-
Step 900
900 (this color)
#043276
oklch(33.6% 0.126 259.4)
-
Step 950
950
#0C254D
oklch(27.1% 0.08 259.5)
#043276 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) | #003B78 | 0.025 |
| Deuteranopia (no green cones) | #003175 | 0.004 |
| Tritanopia (no blue cones) | #00434E | 0.096 |
| Achromatopsia (no color) | #353535 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043276
#043276
oklch(33.6% 0.126 259.4)
- #4A3200
#4A3200
oklch(33.7% 0.07 79.3)
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 #043276, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.028
- Marine #042E60 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.059
- Midnight Blue #191970 ΔE 0.060
- Royal #0C1793 ΔE 0.070
- Cobalt #1E488F ΔE 0.078
- Midnight Green #073B4C ΔE 0.084
Use #043276 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.