#052C5B
Closest named color: Marine (#042E60). oklch(29.8% 0.094 256.1), rgb(5, 44, 91).
Aa
White text reads best on this color (13.83:1).
About this color
#052C5B is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.094 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.010 away. White text reads best on it, at 13.83:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.51:1 |
| White text | 13.83:1 |
Values
| HEX | #052C5B |
| RGB | rgb(5, 44, 91) |
| HSL | hsl(213, 90%, 19%) |
| OKLCH | oklch(29.8% 0.094 256.1) |
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 #052C5B | 13.83:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #052C5B | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #052C5B text on white | 13.83:1 | AAA | Lc 100.0 | Preferred for body text |
| #052C5B text on black | 1.51:1 | 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
#DDEBFF
oklch(93.6% 0.031 257.2)
-
Step 200
200
#C1DBFF
oklch(88.4% 0.057 256.6)
-
Step 300
300
#97C3FF
oklch(80.8% 0.098 256.3)
-
Step 400
400
#5BA2FF
oklch(70.8% 0.155 255.9)
-
Step 500
500
#1E86FF
oklch(63.1% 0.201 256.1)
-
Step 600
600
#006FDF
oklch(55.6% 0.191 256.1)
-
Step 700
700
#005DBD
oklch(49.1% 0.169 256.1)
-
Step 800
800
#004C9D
oklch(42.8% 0.147 256.2)
-
Step 900
900
#003F84
oklch(37.7% 0.129 256.1)
-
Step 950
950 (this color)
#052C5B
oklch(29.8% 0.094 256.1)
#052C5B 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) | #10315D | 0.019 |
| Deuteranopia (no green cones) | #00295A | 0.011 |
| Tritanopia (no blue cones) | #00373F | 0.069 |
| Achromatopsia (no color) | #2D2D2D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #052C5B
#052C5B
oklch(29.8% 0.094 256.1)
- #3F2800
#3F2800
oklch(29.8% 0.063 75.7)
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 #052C5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.010
- Prussian Blue #1D3557 ΔE 0.040
- Marine Blue #01386A ΔE 0.043
- Oxford Blue #1B263B ΔE 0.060
- Midnight Blue #191970 ΔE 0.061
- Midnight Green #073B4C ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.062
- Dark Blue Grey #1F3B4D ΔE 0.066
Use #052C5B 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.