#033D67
Closest named color: Marine Blue (#01386A). oklch(35.1% 0.091 247.5), rgb(3, 61, 103).
Aa
White text reads best on this color (11.24:1).
About this color
#033D67 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.091 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.018 away. White text reads best on it, at 11.24:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.86:1 |
| White text | 11.24:1 |
Values
| HEX | #033D67 |
| RGB | rgb(3, 61, 103) |
| HSL | hsl(205, 94%, 21%) |
| OKLCH | oklch(35.1% 0.091 247.5) |
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 #033D67 | 11.24:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #033D67 | 1.86:1 | Fails | Lc 8.4 | Not readable |
| #033D67 text on white | 11.24:1 | AAA | Lc 95.5 | Preferred for body text |
| #033D67 text on black | 1.86:1 | 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
#C6DCF1
oklch(88.5% 0.037 247)
-
Step 300
300
#9EC5EB
oklch(80.8% 0.068 248)
-
Step 400
400
#66A6E1
oklch(70.6% 0.109 247.7)
-
Step 500
500
#358FD9
oklch(63.2% 0.14 247.4)
-
Step 600
600
#0077C4
oklch(55.5% 0.148 247.6)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900 (this color)
#033D67
oklch(35.1% 0.091 247.5)
-
Step 950
950
#0B2841
oklch(26.9% 0.058 248)
#033D67 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) | #283F69 | 0.031 |
| Deuteranopia (no green cones) | #193766 | 0.021 |
| Tritanopia (no blue cones) | #00474D | 0.063 |
| Achromatopsia (no color) | #3B3B3B | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #033D67
#033D67
oklch(35.1% 0.091 247.5)
- #553100
#553100
oklch(35% 0.078 66.7)
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 #033D67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.018
- Prussian Blue #1D3557 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.036
- Marine #042E60 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.047
- Midnight Green #073B4C ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.051
- Charcoal #264653 ΔE 0.058
Use #033D67 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.