#042056
Closest named color: Marine (#042E60). oklch(26.4% 0.104 261.4), rgb(4, 32, 86).
Aa
White text reads best on this color (15.60:1).
About this color
#042056 is a dark, moderately saturated blue. In OKLCH its lightness is 26%, its chroma 0.104 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.044 away. White text reads best on it, at 15.60:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.34:1 |
| White text | 15.60:1 |
Values
| HEX | #042056 |
| RGB | rgb(4, 32, 86) |
| HSL | hsl(220, 91%, 18%) |
| OKLCH | oklch(26.4% 0.104 261.4) |
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 #042056 | 15.60:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #042056 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #042056 text on white | 15.60:1 | AAA | Lc 102.1 | Preferred for body text |
| #042056 text on black | 1.34:1 | 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
#0162FF
oklch(55.6% 0.245 261.4)
-
Step 700
700
#0052D9
oklch(49.2% 0.217 261.4)
-
Step 800
800
#0042B4
oklch(42.7% 0.19 261.5)
-
Step 900
900
#023796
oklch(37.6% 0.164 261.5)
-
Step 950
950 (this color)
#042056
oklch(26.4% 0.104 261.4)
#042056 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) | #002758 | 0.020 |
| Deuteranopia (no green cones) | #002055 | 0.004 |
| Tritanopia (no blue cones) | #002E37 | 0.080 |
| Achromatopsia (no color) | #242424 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042056
#042056
oklch(26.4% 0.104 261.4)
- #322200
#322200
oklch(26.5% 0.054 82.4)
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 #042056, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.044
- Midnight Blue #191970 ΔE 0.053
- Navy Blue #001146 ΔE 0.053
- Darkblue #030764 ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.062
- Dark Royal Blue #02066F ΔE 0.062
- Deep Blue #040273 ΔE 0.069
Use #042056 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.