#334271
Closest named color: Twilight Blue (#0A437A). oklch(39% 0.082 269), rgb(51, 66, 113).
Aa
White text reads best on this color (9.72:1).
About this color
#334271 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.082 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.038 away. White text reads best on it, at 9.72:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.15:1 |
| White text | 9.72:1 |
Values
| HEX | #334271 |
| RGB | rgb(51, 66, 113) |
| HSL | hsl(225, 38%, 32%) |
| OKLCH | oklch(39% 0.082 269) |
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 #334271 | 9.72:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #334271 | 2.15:1 | Fails | Lc 11.5 | Not readable |
| #334271 text on white | 9.72:1 | AAA | Lc 92.4 | Preferred for body text |
| #334271 text on black | 2.15:1 | Fails | Lc -10.0 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B0C0E9
oklch(80.9% 0.061 268.3)
-
Step 400
400
#879EDF
oklch(70.7% 0.099 268.9)
-
Step 500
500
#6A85D6
oklch(63.2% 0.126 268.7)
-
Step 600
600
#536DC3
oklch(55.7% 0.137 269)
-
Step 700
700
#435AA8
oklch(49% 0.128 269)
-
Step 800
800
#374A88
oklch(42.6% 0.105 268.8)
-
Step 900
900 (this color)
#334271
oklch(39% 0.082 269)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#334271 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) | #2F4773 | 0.015 |
| Deuteranopia (no green cones) | #284270 | 0.014 |
| Tritanopia (no blue cones) | #164C54 | 0.073 |
| Achromatopsia (no color) | #444444 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334271
#334271
oklch(39% 0.082 269)
- #564200
#564200
oklch(39% 0.08 89.1)
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 #334271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.045
- Light Navy #155084 ΔE 0.050
- Cobalt #1E488F ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.057
- Deep Sea Blue #015482 ΔE 0.060
- Charcoal #264653 ΔE 0.060
- Marine Blue #01386A ΔE 0.060
Use #334271 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.