#034B73
Closest named color: Twilight Blue (#0A437A). oklch(39.5% 0.092 241.8), rgb(3, 75, 115).
Aa
White text reads best on this color (9.30:1).
About this color
#034B73 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.092 and its hue 242°. 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 9.30:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #034B73 |
| RGB | rgb(3, 75, 115) |
| HSL | hsl(201, 95%, 23%) |
| OKLCH | oklch(39.5% 0.092 241.8) |
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 #034B73 | 9.30:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #034B73 | 2.25:1 | Fails | Lc 13.0 | Not readable |
| #034B73 text on white | 9.30:1 | AAA | Lc 91.0 | Preferred for body text |
| #034B73 text on black | 2.25:1 | Fails | Lc -11.4 | 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
#C4DDF1
oklch(88.5% 0.038 242.2)
-
Step 300
300
#99C7EA
oklch(80.9% 0.069 241.5)
-
Step 400
400
#5DA9DF
oklch(70.8% 0.11 241.5)
-
Step 500
500
#1D92D6
oklch(63.2% 0.14 241.5)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900 (this color)
#034B73
oklch(39.5% 0.092 241.8)
-
Step 950
950
#052940
oklch(26.9% 0.058 242)
#034B73 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) | #384C75 | 0.044 |
| Deuteranopia (no green cones) | #294372 | 0.032 |
| Tritanopia (no blue cones) | #005559 | 0.062 |
| Achromatopsia (no color) | #474747 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034B73
#034B73
oklch(39.5% 0.092 241.8)
- #683900
#683900
oklch(39.5% 0.091 62)
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 #034B73, 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 0.033
- Deep Sea Blue #015482 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.044
- Cobalt #1E488F ΔE 0.053
- Dusk Blue #26538D ΔE 0.054
- Charcoal #264653 ΔE 0.055
- Marine Blue #01386A ΔE 0.059
Use #034B73 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.