#034A73
Closest named color: Twilight Blue (#0A437A). oklch(39.3% 0.093 242.7), rgb(3, 74, 115).
Aa
White text reads best on this color (9.41:1).
About this color
#034A73 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.093 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.026 away. White text reads best on it, at 9.41:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.23:1 |
| White text | 9.41:1 |
Values
| HEX | #034A73 |
| RGB | rgb(3, 74, 115) |
| HSL | hsl(202, 95%, 23%) |
| OKLCH | oklch(39.3% 0.093 242.7) |
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 #034A73 | 9.41:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #034A73 | 2.23:1 | Fails | Lc 12.7 | Not readable |
| #034A73 text on white | 9.41:1 | AAA | Lc 91.3 | Preferred for body text |
| #034A73 text on black | 2.23:1 | Fails | Lc -11.1 | 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
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF1
oklch(88.5% 0.038 242.2)
-
Step 300
300
#9AC7EA
oklch(81% 0.069 242.1)
-
Step 400
400
#5DA8E0
oklch(70.6% 0.111 242.8)
-
Step 500
500
#1F91D8
oklch(63.1% 0.143 243)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900 (this color)
#034A73
oklch(39.3% 0.093 242.7)
-
Step 950
950
#052941
oklch(27% 0.06 243.1)
#034A73 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) | #364B75 | 0.041 |
| Deuteranopia (no green cones) | #274272 | 0.031 |
| Tritanopia (no blue cones) | #005459 | 0.062 |
| Achromatopsia (no color) | #464646 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034A73
#034A73
oklch(39.3% 0.093 242.7)
- #673900
#673900
oklch(39.3% 0.09 62.7)
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 #034A73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.026
- Light Navy #155084 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.044
- Cobalt #1E488F ΔE 0.052
- Charcoal #264653 ΔE 0.055
- Dusk Blue #26538D ΔE 0.056
- Marine Blue #01386A ΔE 0.056
Use #034A73 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.