#003869
Closest named color: Marine Blue (#01386A). oklch(33.8% 0.1 251.7), rgb(0, 56, 105).
Aa
White text reads best on this color (11.86:1).
About this color
#003869 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.100 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.002 away. White text reads best on it, at 11.86:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.76:1 |
| White text | 11.86:1 |
Values
| HEX | #003869 |
| RGB | rgb(0, 56, 105) |
| HSL | hsl(208, 100%, 21%) |
| OKLCH | oklch(33.8% 0.1 251.7) |
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 #003869 | 11.86:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #003869 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #003869 text on white | 11.86:1 | AAA | Lc 96.6 | Preferred for body text |
| #003869 text on black | 1.76:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF5
oklch(88.6% 0.042 251.7)
-
Step 300
300
#9DC4F0
oklch(80.8% 0.075 251.8)
-
Step 400
400
#66A5E9
oklch(70.8% 0.12 251.5)
-
Step 500
500
#368CE3
oklch(63.1% 0.154 251.9)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0061AF
oklch(49% 0.146 251.8)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900 (this color)
#003869
oklch(33.8% 0.1 251.7)
-
Step 950
950
#0B2744
oklch(26.9% 0.064 252.1)
#003869 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) | #1E3C6B | 0.027 |
| Deuteranopia (no green cones) | #063368 | 0.015 |
| Tritanopia (no blue cones) | #00444B | 0.074 |
| Achromatopsia (no color) | #373737 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003869
#003869
oklch(33.8% 0.1 251.7)
- #4E3000
#4E3000
oklch(33.8% 0.072 71.9)
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 #003869, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.002
- Marine #042E60 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.043
- Midnight Green #073B4C ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.067
- Charcoal #264653 ΔE 0.074
Use #003869 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.