#334A85
Closest named color: Dusk Blue (#26538D). oklch(42.2% 0.102 266.1), rgb(51, 74, 133).
Aa
White text reads best on this color (8.54:1).
About this color
#334A85 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.102 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.028 away. White text reads best on it, at 8.54:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.45:1 |
| White text | 8.54:1 |
Values
| HEX | #334A85 |
| RGB | rgb(51, 74, 133) |
| HSL | hsl(223, 45%, 36%) |
| OKLCH | oklch(42.2% 0.102 266.1) |
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 #334A85 | 8.54:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #334A85 | 2.45:1 | Fails | Lc 14.8 | Not readable |
| #334A85 text on white | 8.54:1 | AAA | Lc 89.2 | Fine for body text |
| #334A85 text on black | 2.45:1 | Fails | Lc -13.0 | 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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#AFC0E8
oklch(80.8% 0.06 267)
-
Step 400
400
#859FDD
oklch(70.7% 0.096 266.5)
-
Step 500
500
#6786D3
oklch(63% 0.122 266.4)
-
Step 600
600
#4E6FC1
oklch(55.7% 0.133 265.8)
-
Step 700
700
#3F5CA6
oklch(49% 0.123 265.9)
-
Step 800
800 (this color)
#334A85
oklch(42.2% 0.102 266.1)
-
Step 900
900
#2E3F6C
oklch(37.6% 0.08 266.9)
-
Step 950
950
#1B253F
oklch(26.9% 0.051 267)
#334A85 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) | #305087 | 0.017 |
| Deuteranopia (no green cones) | #244984 | 0.017 |
| Tritanopia (no blue cones) | #005761 | 0.088 |
| Achromatopsia (no color) | #4C4C4C | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334A85
#334A85
oklch(42.2% 0.102 266.1)
- #624900
#624900
oklch(42.1% 0.086 86)
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 #334A85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.028
- Cobalt #1E488F ΔE 0.028
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.042
- Twilight #4E518B ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.046
- Blueberry #464196 ΔE 0.046
Use #334A85 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.