#3746A3
Closest named color: Blueberry (#464196). oklch(43.8% 0.15 271.8), rgb(55, 70, 163).
Aa
White text reads best on this color (8.17:1).
About this color
#3746A3 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.150 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.030 away. White text reads best on it, at 8.17:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #3746A3 |
| RGB | rgb(55, 70, 163) |
| HSL | hsl(232, 50%, 43%) |
| OKLCH | oklch(43.8% 0.15 271.8) |
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 #3746A3 | 8.17:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #3746A3 | 2.56:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #3746A3 text on white | 8.17:1 | AAA | Lc 87.9 | Fine for body text |
| #3746A3 text on black | 2.56:1 | Fails | Lc -14.2 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ACBEFA
oklch(80.9% 0.087 271.4)
-
Step 400
400
#829AF8
oklch(70.8% 0.14 271.6)
-
Step 500
500
#657DF4
oklch(63.1% 0.179 271.8)
-
Step 600
600
#4F63E3
oklch(55.7% 0.194 271.8)
-
Step 700
700
#4051C5
oklch(49.1% 0.18 271.7)
-
Step 800
800 (this color)
#3746A3
oklch(43.8% 0.15 271.8)
-
Step 900
900
#2D3A7F
oklch(37.8% 0.117 271.7)
-
Step 950
950
#1A224A
oklch(26.9% 0.075 272)
#3746A3 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) | #0054A6 | 0.046 |
| Deuteranopia (no green cones) | #004AA1 | 0.040 |
| Tritanopia (no blue cones) | #005C6D | 0.124 |
| Achromatopsia (no color) | #4F4F4F | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3746A3
#3746A3
oklch(43.8% 0.15 271.8)
- #644F00
#644F00
oklch(43.7% 0.089 91.1)
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 #3746A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.030
- Cobalt #1E488F ΔE 0.043
- Sapphire #2138AB ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.048
- Dusk Blue #26538D ΔE 0.055
- Blue Blue #2242C7 ΔE 0.062
- Twilight #4E518B ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.068
Use #3746A3 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.