#034366
Closest named color: Twilight Blue (#0A437A). oklch(36.6% 0.083 240.9), rgb(3, 67, 102).
Aa
White text reads best on this color (10.50:1).
About this color
#034366 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.083 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.035 away. White text reads best on it, at 10.50:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.99:1 |
| White text | 10.50:1 |
Values
| HEX | #034366 |
| RGB | rgb(3, 67, 102) |
| HSL | hsl(201, 94%, 21%) |
| OKLCH | oklch(36.6% 0.083 240.9) |
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 #034366 | 10.50:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #034366 | 1.99:1 | Fails | Lc 10.0 | Not readable |
| #034366 text on white | 10.50:1 | AAA | Lc 93.9 | Preferred for body text |
| #034366 text on black | 1.99:1 | Fails | Lc -8.6 | 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
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDEE
oklch(88.6% 0.034 239.9)
-
Step 300
300
#9DC7E6
oklch(81% 0.063 240.5)
-
Step 400
400
#64A8D9
oklch(70.6% 0.1 241.4)
-
Step 500
500
#2F92CF
oklch(63.2% 0.128 240.8)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900 (this color)
#034366
oklch(36.6% 0.083 240.9)
-
Step 950
950
#09293E
oklch(27% 0.054 241.8)
#034366 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) | #324468 | 0.041 |
| Deuteranopia (no green cones) | #253B65 | 0.032 |
| Tritanopia (no blue cones) | #004C4F | 0.057 |
| Achromatopsia (no color) | #3F3F3F | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034366
#034366
oklch(36.6% 0.083 240.9)
- #5D3202
#5D3202
oklch(36.5% 0.083 60.8)
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 #034366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.036
- Marine Blue #01386A ΔE 0.037
- Charcoal #264653 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.047
- Midnight Green #073B4C ΔE 0.048
- Dark Teal #014D4E ΔE 0.061
Use #034366 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.