#3B436C
Closest named color: Dark Grey Blue (#29465B). oklch(39.5% 0.07 274.4), rgb(59, 67, 108).
Aa
White text reads best on this color (9.52:1).
About this color
#3B436C is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.070 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.042 away. White text reads best on it, at 9.52:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.52:1 |
Values
| HEX | #3B436C |
| RGB | rgb(59, 67, 108) |
| HSL | hsl(230, 29%, 33%) |
| OKLCH | oklch(39.5% 0.07 274.4) |
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 #3B436C | 9.52:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #3B436C | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #3B436C text on white | 9.52:1 | AAA | Lc 92.0 | Preferred for body text |
| #3B436C text on black | 2.20:1 | Fails | Lc -10.4 | 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 900.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE3
oklch(81% 0.052 274.2)
-
Step 400
400
#909DD6
oklch(70.7% 0.085 274.1)
-
Step 500
500
#7684CA
oklch(63.1% 0.107 274.3)
-
Step 600
600
#5F6CB7
oklch(55.5% 0.117 274.5)
-
Step 700
700
#4F5A9E
oklch(49.1% 0.109 274.7)
-
Step 800
800
#404A80
oklch(42.7% 0.09 274)
-
Step 900
900 (this color)
#3B436C
oklch(39.5% 0.07 274.4)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#3B436C 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) | #35486E | 0.016 |
| Deuteranopia (no green cones) | #31446B | 0.014 |
| Tritanopia (no blue cones) | #2B4B52 | 0.062 |
| Achromatopsia (no color) | #454545 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B436C
#3B436C
oklch(39.5% 0.07 274.4)
- #534612
#534612
oklch(39.7% 0.071 94.7)
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 #3B436C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.042
- Twilight Blue #0A437A ΔE 0.052
- Charcoal #264653 ΔE 0.056
- Light Navy #155084 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.061
- Cobalt #1E488F ΔE 0.064
- Deep Sea Blue #015482 ΔE 0.065
- Dusk #4E5481 ΔE 0.066
Use #3B436C 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.