#03376F
Closest named color: Marine Blue (#01386A). oklch(34.1% 0.11 255.2), rgb(3, 55, 111).
Aa
White text reads best on this color (11.79:1).
About this color
#03376F is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.110 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.010 away. White text reads best on it, at 11.79:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.77:1 |
| White text | 11.79:1 |
Values
| HEX | #03376F |
| RGB | rgb(3, 55, 111) |
| HSL | hsl(211, 95%, 22%) |
| OKLCH | oklch(34.1% 0.11 255.2) |
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 #03376F | 11.79:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #03376F | 1.77:1 | Fails | Lc 7.4 | Not readable |
| #03376F text on white | 11.79:1 | AAA | Lc 96.5 | Preferred for body text |
| #03376F text on black | 1.77:1 | 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
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400
#66A3F1
oklch(70.7% 0.131 255.2)
-
Step 500
500
#3789EC
oklch(63% 0.169 255.2)
-
Step 600
600
#0371DA
oklch(55.7% 0.182 255)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#014D99
oklch(42.7% 0.14 255.1)
-
Step 900
900 (this color)
#03376F
oklch(34.1% 0.11 255.2)
-
Step 950
950
#0B2647
oklch(26.8% 0.07 255.3)
#03376F 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) | #163C71 | 0.021 |
| Deuteranopia (no green cones) | #00336E | 0.012 |
| Tritanopia (no blue cones) | #00454D | 0.083 |
| Achromatopsia (no color) | #383838 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03376F
#03376F
oklch(34.1% 0.11 255.2)
- #4E3200
#4E3200
oklch(34.2% 0.072 74.9)
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 #03376F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.010
- Marine #042E60 ΔE 0.036
- Twilight Blue #0A437A ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.044
- Midnight Green #073B4C ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.066
- Dark Grey Blue #29465B ΔE 0.074
- Midnight Blue #191970 ΔE 0.074
Use #03376F 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.