#034D73
Closest named color: Deep Sea Blue (#015482). oklch(40.1% 0.09 239.9), rgb(3, 77, 115).
Aa
White text reads best on this color (9.07:1).
About this color
#034D73 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.090 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 9.07:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #034D73 |
| RGB | rgb(3, 77, 115) |
| HSL | hsl(200, 95%, 23%) |
| OKLCH | oklch(40.1% 0.09 239.9) |
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 #034D73 | 9.07:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #034D73 | 2.31:1 | Fails | Lc 13.6 | Not readable |
| #034D73 text on white | 9.07:1 | AAA | Lc 90.4 | Preferred for body text |
| #034D73 text on black | 2.31:1 | Fails | Lc -11.9 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDF0
oklch(88.5% 0.037 240.7)
-
Step 300
300
#99C7E8
oklch(80.9% 0.067 239.8)
-
Step 400
400
#5CA9DD
oklch(70.7% 0.108 240.2)
-
Step 500
500
#1892D4
oklch(63% 0.139 240.3)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900 (this color)
#034D73
oklch(40.1% 0.09 239.9)
-
Step 950
950
#04293F
oklch(26.8% 0.057 240.3)
#034D73 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) | #3B4E75 | 0.046 |
| Deuteranopia (no green cones) | #2C4472 | 0.036 |
| Tritanopia (no blue cones) | #00575A | 0.061 |
| Achromatopsia (no color) | #484848 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034D73
#034D73
oklch(40.1% 0.09 239.9)
- #6A3A06
#6A3A06
oklch(40% 0.09 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 #034D73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy #155084 ΔE 0.031
- Twilight Blue #0A437A ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.045
- Dusk Blue #26538D ΔE 0.052
- Cobalt #1E488F ΔE 0.054
- Charcoal #264653 ΔE 0.055
- Deep Teal #00555A ΔE 0.056
Use #034D73 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.