#034A71
Closest named color: Twilight Blue (#0A437A). oklch(39.1% 0.09 241.5), rgb(3, 74, 113).
Aa
White text reads best on this color (9.45:1).
About this color
#034A71 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.090 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.029 away. White text reads best on it, at 9.45:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.22:1 |
| White text | 9.45:1 |
Values
| HEX | #034A71 |
| RGB | rgb(3, 74, 113) |
| HSL | hsl(201, 95%, 23%) |
| OKLCH | oklch(39.1% 0.09 241.5) |
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 #034A71 | 9.45:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #034A71 | 2.22:1 | Fails | Lc 12.6 | Not readable |
| #034A71 text on white | 9.45:1 | AAA | Lc 91.4 | Preferred for body text |
| #034A71 text on black | 2.22:1 | Fails | Lc -11.0 | 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
#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
#9AC7E9
oklch(80.9% 0.068 241.3)
-
Step 400
400
#5EA9DE
oklch(70.8% 0.108 241.3)
-
Step 500
500
#2092D5
oklch(63.2% 0.138 241.4)
-
Step 600
600
#007AB8
oklch(55.5% 0.131 241.7)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900 (this color)
#034A71
oklch(39.1% 0.09 241.5)
-
Step 950
950
#062940
oklch(27% 0.058 242.5)
#034A71 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) | #374B73 | 0.043 |
| Deuteranopia (no green cones) | #284270 | 0.032 |
| Tritanopia (no blue cones) | #005458 | 0.061 |
| Achromatopsia (no color) | #464646 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034A71
#034A71
oklch(39.1% 0.09 241.5)
- #673800
#673800
oklch(39.1% 0.09 61.6)
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 #034A71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.029
- Light Navy #155084 ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.042
- Charcoal #264653 ΔE 0.052
- Cobalt #1E488F ΔE 0.055
- Marine Blue #01386A ΔE 0.056
- Dusk Blue #26538D ΔE 0.058
Use #034A71 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.