#033C5A
Closest named color: Midnight Green (#073B4C). oklch(33.9% 0.075 239.4), rgb(3, 60, 90).
Aa
White text reads best on this color (11.68:1).
About this color
#033C5A is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.075 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.025 away. White text reads best on it, at 11.68:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.79:1 |
| White text | 11.68:1 |
Values
| HEX | #033C5A |
| RGB | rgb(3, 60, 90) |
| HSL | hsl(201, 94%, 18%) |
| OKLCH | oklch(33.9% 0.075 239.4) |
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 #033C5A | 11.68:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #033C5A | 1.79:1 | Fails | Lc 7.5 | Not readable |
| #033C5A text on white | 11.68:1 | AAA | Lc 96.4 | Preferred for body text |
| #033C5A text on black | 1.79:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#A0C6E2
oklch(80.8% 0.057 240.3)
-
Step 400
400
#6AA8D3
oklch(70.6% 0.09 240)
-
Step 500
500
#3B92C7
oklch(63.1% 0.115 239.2)
-
Step 600
600
#057BB4
oklch(55.5% 0.125 239.6)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#02557E
oklch(42.8% 0.096 239.4)
-
Step 900
900 (this color)
#033C5A
oklch(33.9% 0.075 239.4)
-
Step 950
950
#0D293B
oklch(26.9% 0.047 240.1)
#033C5A 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) | #2D3C5B | 0.038 |
| Deuteranopia (no green cones) | #223559 | 0.030 |
| Tritanopia (no blue cones) | #004447 | 0.049 |
| Achromatopsia (no color) | #383838 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #033C5A
#033C5A
oklch(33.9% 0.075 239.4)
- #532D06
#532D06
oklch(33.9% 0.074 60.1)
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 #033C5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.025
- Prussian Blue #1D3557 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.028
- Marine Blue #01386A ΔE 0.033
- Marine #042E60 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.048
- Charcoal #264653 ΔE 0.049
- Gunmetal #293241 ΔE 0.054
Use #033C5A 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.