#052B5F
Closest named color: Marine (#042E60). oklch(29.9% 0.102 258), rgb(5, 43, 95).
Aa
White text reads best on this color (13.84:1).
About this color
#052B5F is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.102 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.009 away. White text reads best on it, at 13.84:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.51:1 |
| White text | 13.84:1 |
Values
| HEX | #052B5F |
| RGB | rgb(5, 43, 95) |
| HSL | hsl(215, 90%, 20%) |
| OKLCH | oklch(29.9% 0.102 258) |
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 #052B5F | 13.84:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #052B5F | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #052B5F text on white | 13.84:1 | AAA | Lc 100.0 | Preferred for body text |
| #052B5F 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
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9AC3FF
oklch(81% 0.096 257.8)
-
Step 400
400
#60A0FF
oklch(70.6% 0.155 258.1)
-
Step 500
500
#2D85FF
oklch(63.2% 0.199 257.9)
-
Step 600
600
#006CE8
oklch(55.6% 0.205 258)
-
Step 700
700
#005AC5
oklch(49.1% 0.183 258.1)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900
#003D89
oklch(37.7% 0.139 257.9)
-
Step 950
950 (this color)
#052B5F
oklch(29.9% 0.102 258)
#052B5F 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) | #073161 | 0.019 |
| Deuteranopia (no green cones) | #00295E | 0.008 |
| Tritanopia (no blue cones) | #003840 | 0.078 |
| Achromatopsia (no color) | #2D2D2D | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #052B5F
#052B5F
oklch(29.9% 0.102 258)
- #3E2900
#3E2900
oklch(29.9% 0.062 78.8)
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 #052B5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.009
- Marine Blue #01386A ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.044
- Midnight Blue #191970 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.067
- Midnight Green #073B4C ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.068
- Dark Blue Grey #1F3B4D ΔE 0.072
Use #052B5F 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.