#003477
Closest named color: Marine Blue (#01386A). oklch(34% 0.126 257.9), rgb(0, 52, 119).
Aa
White text reads best on this color (11.94:1).
About this color
#003477 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.126 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.026 away. White text reads best on it, at 11.94:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.94:1 |
Values
| HEX | #003477 |
| RGB | rgb(0, 52, 119) |
| HSL | hsl(214, 100%, 23%) |
| OKLCH | oklch(34% 0.126 257.9) |
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 #003477 | 11.94:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #003477 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #003477 text on white | 11.94:1 | AAA | Lc 96.7 | Preferred for body text |
| #003477 text on black | 1.75:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFC
oklch(88.5% 0.052 257.4)
-
Step 300
300
#9BC3FE
oklch(81% 0.094 258)
-
Step 400
400
#62A1FD
oklch(70.8% 0.15 257.8)
-
Step 500
500
#3286FB
oklch(63.2% 0.192 257.8)
-
Step 600
600
#006CE8
oklch(55.6% 0.205 258)
-
Step 700
700
#005AC4
oklch(49% 0.181 258)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900 (this color)
#003477
oklch(34% 0.126 257.9)
-
Step 950
950
#0A254C
oklch(26.9% 0.079 258.2)
#003477 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) | #003C79 | 0.023 |
| Deuteranopia (no green cones) | #003276 | 0.006 |
| Tritanopia (no blue cones) | #004550 | 0.095 |
| Achromatopsia (no color) | #373737 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003477
#003477
oklch(34% 0.126 257.9)
- #4C3200
#4C3200
oklch(33.9% 0.071 77.1)
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 #003477, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.026
- Marine #042E60 ΔE 0.043
- Twilight Blue #0A437A ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.059
- Midnight Blue #191970 ΔE 0.065
- Royal #0C1793 ΔE 0.073
- Cobalt #1E488F ΔE 0.074
- Midnight Green #073B4C ΔE 0.083
Use #003477 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.