#03305A
Closest named color: Marine (#042E60). oklch(30.7% 0.088 252), rgb(3, 48, 90).
Aa
White text reads best on this color (13.33:1).
About this color
#03305A is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.088 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.013 away. White text reads best on it, at 13.33:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.57:1 |
| White text | 13.33:1 |
Values
| HEX | #03305A |
| RGB | rgb(3, 48, 90) |
| HSL | hsl(209, 94%, 18%) |
| OKLCH | oklch(30.7% 0.088 252) |
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 #03305A | 13.33:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #03305A | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #03305A text on white | 13.33:1 | AAA | Lc 99.3 | Preferred for body text |
| #03305A text on black | 1.57:1 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DCECFE
oklch(93.7% 0.03 251.3)
-
Step 200
200
#BEDCFF
oklch(88.4% 0.058 252.4)
-
Step 300
300
#91C5FF
oklch(80.9% 0.099 251.8)
-
Step 400
400
#4DA4FF
oklch(70.7% 0.158 251.9)
-
Step 500
500
#008AF6
oklch(63% 0.189 252)
-
Step 600
600
#0074D0
oklch(55.6% 0.166 251.9)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950 (this color)
#03305A
oklch(30.7% 0.088 252)
#03305A 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) | #1A335C | 0.023 |
| Deuteranopia (no green cones) | #082C59 | 0.012 |
| Tritanopia (no blue cones) | #003A40 | 0.065 |
| Achromatopsia (no color) | #2F2F2F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03305A
#03305A
oklch(30.7% 0.088 252)
- #442900
#442900
oklch(30.7% 0.066 71.4)
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 #03305A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.013
- Prussian Blue #1D3557 ΔE 0.030
- Marine Blue #01386A ΔE 0.035
- Midnight Green #073B4C ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.057
- Gunmetal #293241 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.060
Use #03305A 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.