#042768
Closest named color: Marine (#042E60). oklch(29.7% 0.121 261.3), rgb(4, 39, 104).
Aa
White text reads best on this color (14.04:1).
About this color
#042768 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.121 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.025 away. White text reads best on it, at 14.04:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.49:1 |
| White text | 14.04:1 |
Values
| HEX | #042768 |
| RGB | rgb(4, 39, 104) |
| HSL | hsl(219, 93%, 21%) |
| OKLCH | oklch(29.7% 0.121 261.3) |
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 #042768 | 14.04:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #042768 | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #042768 text on white | 14.04:1 | AAA | Lc 100.1 | Preferred for body text |
| #042768 text on black | 1.49:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#3F82FF
oklch(63.1% 0.198 261.5)
-
Step 600
600
#0062FF
oklch(55.6% 0.245 261.3)
-
Step 700
700
#0052D8
oklch(49.1% 0.216 261.3)
-
Step 800
800
#0043B3
oklch(42.8% 0.187 261.2)
-
Step 900
900
#003797
oklch(37.7% 0.166 261.3)
-
Step 950
950 (this color)
#042768
oklch(29.7% 0.121 261.3)
#042768 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) | #00306A | 0.025 |
| Deuteranopia (no green cones) | #002767 | 0.004 |
| Tritanopia (no blue cones) | #003843 | 0.092 |
| Achromatopsia (no color) | #2C2C2C | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042768
#042768
oklch(29.7% 0.121 261.3)
- #3D2900
#3D2900
oklch(29.7% 0.062 80.2)
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 #042768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.025
- Midnight Blue #191970 ΔE 0.036
- Marine Blue #01386A ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.061
- Dark Royal Blue #02066F ΔE 0.064
- Deep Blue #040273 ΔE 0.067
- Darkblue #030764 ΔE 0.068
- Navy #000080 ΔE 0.073
Use #042768 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.