#034C78
Closest named color: Light Navy (#155084). oklch(40.1% 0.097 243.9), rgb(3, 76, 120).
Aa
White text reads best on this color (9.09:1).
About this color
#034C78 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.097 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.025 away. White text reads best on it, at 9.09:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #034C78 |
| RGB | rgb(3, 76, 120) |
| HSL | hsl(203, 95%, 24%) |
| OKLCH | oklch(40.1% 0.097 243.9) |
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 #034C78 | 9.09:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #034C78 | 2.30:1 | Fails | Lc 13.6 | Not readable |
| #034C78 text on white | 9.09:1 | AAA | Lc 90.4 | Preferred for body text |
| #034C78 text on black | 2.30:1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C3DDF2
oklch(88.5% 0.04 242.4)
-
Step 300
300
#99C7ED
oklch(81% 0.073 243.7)
-
Step 400
400
#5BA8E4
oklch(70.7% 0.117 244.1)
-
Step 500
500
#1791DC
oklch(63.2% 0.149 243.7)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900 (this color)
#034C78
oklch(40.1% 0.097 243.9)
-
Step 950
950
#042942
oklch(27% 0.061 243.6)
#034C78 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) | #374E7A | 0.042 |
| Deuteranopia (no green cones) | #264477 | 0.029 |
| Tritanopia (no blue cones) | #00575C | 0.067 |
| Achromatopsia (no color) | #484848 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034C78
#034C78
oklch(40.1% 0.097 243.9)
- #693B00
#693B00
oklch(40% 0.091 63.6)
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 #034C78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.027
- Twilight Blue #0A437A ΔE 0.028
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.059
- Charcoal #264653 ΔE 0.063
Use #034C78 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.