#3447A0
Closest named color: Blueberry (#464196). oklch(43.5% 0.146 270.2), rgb(52, 71, 160).
Aa
White text reads best on this color (8.21:1).
About this color
#3447A0 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.146 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.031 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #3447A0 |
| RGB | rgb(52, 71, 160) |
| HSL | hsl(229, 51%, 42%) |
| OKLCH | oklch(43.5% 0.146 270.2) |
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 #3447A0 | 8.21:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #3447A0 | 2.55:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #3447A0 text on white | 8.21:1 | AAA | Lc 88.0 | Fine for body text |
| #3447A0 text on black | 2.55:1 | Fails | Lc -14.1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8F9
oklch(88.4% 0.047 270.8)
-
Step 300
300
#ABBEF8
oklch(80.8% 0.085 270.4)
-
Step 400
400
#809BF5
oklch(70.7% 0.135 270)
-
Step 500
500
#627FF1
oklch(63.1% 0.173 270.1)
-
Step 600
600
#4B65E0
oklch(55.6% 0.189 270.1)
-
Step 700
700
#3D53C3
oklch(49.2% 0.176 270.2)
-
Step 800
800 (this color)
#3447A0
oklch(43.5% 0.146 270.2)
-
Step 900
900
#2B3B7D
oklch(37.7% 0.113 270)
-
Step 950
950
#192349
oklch(27% 0.072 270)
#3447A0 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) | #0054A3 | 0.043 |
| Deuteranopia (no green cones) | #004A9E | 0.036 |
| Tritanopia (no blue cones) | #005C6C | 0.120 |
| Achromatopsia (no color) | #4F4F4F | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3447A0
#3447A0
oklch(43.5% 0.146 270.2)
- #644E00
#644E00
oklch(43.5% 0.089 90)
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 #3447A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.031
- Cobalt #1E488F ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.047
- Sapphire #2138AB ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Twilight #4E518B ΔE 0.061
- Light Navy #155084 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.065
Use #3447A0 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.