#3646A6
Closest named color: Blueberry (#464196). oklch(43.9% 0.155 271.4), rgb(54, 70, 166).
Aa
White text reads best on this color (8.12:1).
About this color
#3646A6 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.155 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.034 away. White text reads best on it, at 8.12:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.58:1 |
| White text | 8.12:1 |
Values
| HEX | #3646A6 |
| RGB | rgb(54, 70, 166) |
| HSL | hsl(231, 51%, 43%) |
| OKLCH | oklch(43.9% 0.155 271.4) |
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 #3646A6 | 8.12:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #3646A6 | 2.58:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #3646A6 text on white | 8.12:1 | AAA | Lc 87.7 | Fine for body text |
| #3646A6 text on black | 2.58:1 | Fails | Lc -14.4 | 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
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ABBEFC
oklch(80.9% 0.09 271.1)
-
Step 400
400
#8099FA
oklch(70.6% 0.145 271.4)
-
Step 500
500
#637CF8
oklch(63.1% 0.186 271.5)
-
Step 600
600
#4D62E6
oklch(55.6% 0.2 271.5)
-
Step 700
700
#3E50C8
oklch(49.1% 0.186 271.2)
-
Step 800
800 (this color)
#3646A6
oklch(43.9% 0.155 271.4)
-
Step 900
900
#2C3980
oklch(37.6% 0.12 271.6)
-
Step 950
950
#19224B
oklch(26.9% 0.077 271.1)
#3646A6 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) | #0055A9 | 0.047 |
| Deuteranopia (no green cones) | #004BA4 | 0.038 |
| Tritanopia (no blue cones) | #005D6F | 0.126 |
| Achromatopsia (no color) | #4F4F4F | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3646A6
#3646A6
oklch(43.9% 0.155 271.4)
- #655000
#655000
oklch(44% 0.09 91.3)
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 #3646A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.034
- Sapphire #2138AB ΔE 0.045
- Cobalt #1E488F ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.053
- Blue Blue #2242C7 ΔE 0.057
- Dusk Blue #26538D ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.063
- Twilight #4E518B ΔE 0.067
Use #3646A6 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.