#3641A0
Closest named color: Blueberry (#464196). oklch(42.5% 0.153 273), rgb(54, 65, 160).
Aa
White text reads best on this color (8.67:1).
About this color
#3641A0 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.153 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.028 away. White text reads best on it, at 8.67:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.42:1 |
| White text | 8.67:1 |
Values
| HEX | #3641A0 |
| RGB | rgb(54, 65, 160) |
| HSL | hsl(234, 50%, 42%) |
| OKLCH | oklch(42.5% 0.153 273) |
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 #3641A0 | 8.67:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #3641A0 | 2.42:1 | Fails | Lc 14.6 | Not readable |
| #3641A0 text on white | 8.67:1 | AAA | Lc 89.3 | Fine for body text |
| #3641A0 text on black | 2.42:1 | Fails | Lc -12.9 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FB
oklch(88.6% 0.049 272.8)
-
Step 300
300
#ADBDFB
oklch(80.8% 0.09 273.1)
-
Step 400
400
#8499F9
oklch(70.8% 0.142 272.9)
-
Step 500
500
#677CF6
oklch(63.2% 0.182 272.8)
-
Step 600
600
#5161E5
oklch(55.6% 0.199 272.9)
-
Step 700
700
#434FC7
oklch(49.1% 0.185 273.1)
-
Step 800
800 (this color)
#3641A0
oklch(42.5% 0.153 273)
-
Step 900
900
#2E3980
oklch(37.7% 0.12 272.7)
-
Step 950
950
#1B224B
oklch(27% 0.076 273)
#3641A0 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) | #0050A3 | 0.048 |
| Deuteranopia (no green cones) | #00479E | 0.041 |
| Tritanopia (no blue cones) | #00586A | 0.126 |
| Achromatopsia (no color) | #4B4B4B | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3641A0
#3641A0
oklch(42.5% 0.153 273)
- #5F4C00
#5F4C00
oklch(42.4% 0.087 92.3)
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 #3641A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.028
- Sapphire #2138AB ΔE 0.039
- Cobalt #1E488F ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.043
- Dusk Blue #26538D ΔE 0.061
- Blue Blue #2242C7 ΔE 0.065
- Majorelle Blue #3F37C9 ΔE 0.069
- Light Navy #155084 ΔE 0.070
Use #3641A0 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.