#3347A7
Closest named color: Blueberry (#464196). oklch(44% 0.156 269.9), rgb(51, 71, 167).
Aa
White text reads best on this color (8.07:1).
About this color
#3347A7 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.156 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.038 away. White text reads best on it, at 8.07:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #3347A7 |
| RGB | rgb(51, 71, 167) |
| HSL | hsl(230, 53%, 43%) |
| OKLCH | oklch(44% 0.156 269.9) |
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 #3347A7 | 8.07:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #3347A7 | 2.60:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #3347A7 text on white | 8.07:1 | AAA | Lc 87.5 | Fine for body text |
| #3347A7 text on black | 2.60:1 | Fails | Lc -14.6 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#A9BEFC
oklch(80.8% 0.091 269.8)
-
Step 400
400
#7D9AFB
oklch(70.7% 0.146 269.8)
-
Step 500
500
#5F7DF8
oklch(63% 0.186 270)
-
Step 600
600
#4863E7
oklch(55.6% 0.201 269.8)
-
Step 700
700
#3A51C9
oklch(49.2% 0.187 269.8)
-
Step 800
800 (this color)
#3347A7
oklch(44% 0.156 269.9)
-
Step 900
900
#293A81
oklch(37.7% 0.121 269.6)
-
Step 950
950
#18234B
oklch(27.1% 0.075 269.3)
#3347A7 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) | #0055AA | 0.043 |
| Deuteranopia (no green cones) | #004BA5 | 0.034 |
| Tritanopia (no blue cones) | #005E70 | 0.125 |
| Achromatopsia (no color) | #505050 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3347A7
#3347A7
oklch(44% 0.156 269.9)
- #665000
#665000
oklch(44.1% 0.09 90.4)
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 #3347A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.038
- Sapphire #2138AB ΔE 0.044
- Cobalt #1E488F ΔE 0.046
- Blue Blue #2242C7 ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.056
- Dusk Blue #26538D ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.064
- Twilight #4E518B ΔE 0.068
Use #3347A7 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.