#05336C
Closest named color: Marine Blue (#01386A). oklch(33% 0.11 257), rgb(5, 51, 108).
Aa
White text reads best on this color (12.37:1).
About this color
#05336C is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.110 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.016 away. White text reads best on it, at 12.37:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.69:1 |
| White text | 12.37:1 |
Values
| HEX | #05336C |
| RGB | rgb(5, 51, 108) |
| HSL | hsl(213, 91%, 22%) |
| OKLCH | oklch(33% 0.11 257) |
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 #05336C | 12.37:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #05336C | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #05336C text on white | 12.37:1 | AAA | Lc 97.6 | Preferred for body text |
| #05336C text on black | 1.69:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9FC3F6
oklch(80.9% 0.082 257.1)
-
Step 400
400
#69A2F2
oklch(70.7% 0.132 257)
-
Step 500
500
#3E88ED
oklch(63.1% 0.169 257.1)
-
Step 600
600
#176FDB
oklch(55.5% 0.183 257)
-
Step 700
700
#065CBE
oklch(49% 0.17 257)
-
Step 800
800
#0C4C9A
oklch(42.7% 0.141 256.9)
-
Step 900
900 (this color)
#05336C
oklch(33% 0.11 257)
-
Step 950
950
#0D2648
oklch(27% 0.07 257)
#05336C 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) | #0E396E | 0.020 |
| Deuteranopia (no green cones) | #00306B | 0.010 |
| Tritanopia (no blue cones) | #00414A | 0.083 |
| Achromatopsia (no color) | #343434 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05336C
#05336C
oklch(33% 0.11 257)
- #493000
#493000
oklch(33.1% 0.069 77.3)
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 #05336C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.016
- Marine #042E60 ΔE 0.025
- Prussian Blue #1D3557 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.052
- Midnight Blue #191970 ΔE 0.064
- Midnight Green #073B4C ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.080
Use #05336C 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.