#033761
Closest named color: Marine Blue (#01386A). oklch(33.1% 0.09 249.5), rgb(3, 55, 97).
Aa
White text reads best on this color (12.18:1).
About this color
#033761 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.090 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.016 away. White text reads best on it, at 12.18:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.72:1 |
| White text | 12.18:1 |
Values
| HEX | #033761 |
| RGB | rgb(3, 55, 97) |
| HSL | hsl(207, 94%, 20%) |
| OKLCH | oklch(33.1% 0.09 249.5) |
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 #033761 | 12.18:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #033761 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #033761 text on white | 12.18:1 | AAA | Lc 97.3 | Preferred for body text |
| #033761 text on black | 1.72:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#A0C5EB
oklch(81% 0.067 249.3)
-
Step 400
400
#6AA6E1
oklch(70.8% 0.107 249.2)
-
Step 500
500
#3D8ED8
oklch(63.1% 0.137 249.2)
-
Step 600
600
#1176C6
oklch(55.6% 0.15 249.7)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800
#08518A
oklch(42.7% 0.114 249.4)
-
Step 900
900 (this color)
#033761
oklch(33.1% 0.09 249.5)
-
Step 950
950
#0D2841
oklch(27% 0.057 249.3)
#033761 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) | #223A63 | 0.028 |
| Deuteranopia (no green cones) | #123260 | 0.016 |
| Tritanopia (no blue cones) | #004147 | 0.064 |
| Achromatopsia (no color) | #353535 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #033761
#033761
oklch(33.1% 0.09 249.5)
- #4D2E00
#4D2E00
oklch(33.2% 0.072 69.8)
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 #033761, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.016
- Prussian Blue #1D3557 ΔE 0.024
- Marine #042E60 ΔE 0.028
- Midnight Green #073B4C ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.045
- Twilight Blue #0A437A ΔE 0.054
- Gunmetal #293241 ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.065
Use #033761 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.