#334780
Closest named color: Cobalt (#1E488F). oklch(41.1% 0.099 267.4), rgb(51, 71, 128).
Aa
White text reads best on this color (8.92:1).
About this color
#334780 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.099 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.032 away. White text reads best on it, at 8.92:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #334780 |
| RGB | rgb(51, 71, 128) |
| HSL | hsl(224, 43%, 35%) |
| OKLCH | oklch(41.1% 0.099 267.4) |
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 #334780 | 8.92:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #334780 | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #334780 text on white | 8.92:1 | AAA | Lc 90.3 | Preferred for body text |
| #334780 text on black | 2.35:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EF
oklch(88.5% 0.032 268)
-
Step 300
300
#B0C0E7
oklch(80.9% 0.058 267.6)
-
Step 400
400
#879FDB
oklch(70.7% 0.092 267.3)
-
Step 500
500
#6A86D1
oklch(63.1% 0.118 267.5)
-
Step 600
600
#526EBE
oklch(55.5% 0.129 267.6)
-
Step 700
700
#435CA4
oklch(49.1% 0.119 267.5)
-
Step 800
800 (this color)
#334780
oklch(41.1% 0.099 267.4)
-
Step 900
900
#2F3F6A
oklch(37.6% 0.077 267.2)
-
Step 950
950
#1C253E
oklch(26.9% 0.049 268)
#334780 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) | #2E4D82 | 0.017 |
| Deuteranopia (no green cones) | #23467F | 0.019 |
| Tritanopia (no blue cones) | #00545D | 0.088 |
| Achromatopsia (no color) | #4A4A4A | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334780
#334780
oklch(41.1% 0.099 267.4)
- #5E4700
#5E4700
oklch(41.1% 0.084 87.4)
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 #334780, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.032
- Light Navy #155084 ΔE 0.034
- Dusk Blue #26538D ΔE 0.038
- Twilight Blue #0A437A ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.046
- Blueberry #464196 ΔE 0.049
- Twilight #4E518B ΔE 0.053
Use #334780 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.