#3B4870
Closest named color: Dark Grey Blue (#29465B). oklch(40.9% 0.069 269.5), rgb(59, 72, 112).
Aa
White text reads best on this color (8.94:1).
About this color
#3B4870 is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.069 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.045 away. White text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #3B4870 |
| RGB | rgb(59, 72, 112) |
| HSL | hsl(225, 31%, 34%) |
| OKLCH | oklch(40.9% 0.069 269.5) |
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 #3B4870 | 8.94:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #3B4870 | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #3B4870 text on white | 8.94:1 | AAA | Lc 90.5 | Preferred for body text |
| #3B4870 text on black | 2.34:1 | Fails | Lc -11.8 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B6C0DC
oklch(80.9% 0.041 269.9)
-
Step 400
400
#909FCA
oklch(70.6% 0.065 269.7)
-
Step 500
500
#7587BC
oklch(63% 0.083 269.5)
-
Step 600
600
#5E70A8
oklch(55.5% 0.09 269.7)
-
Step 700
700
#4E5E91
oklch(49.2% 0.084 269.9)
-
Step 800
800 (this color)
#3B4870
oklch(40.9% 0.069 269.5)
-
Step 900
900
#36405F
oklch(37.7% 0.055 269.9)
-
Step 950
950
#202637
oklch(27.1% 0.033 269.2)
#3B4870 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) | #3A4C72 | 0.012 |
| Deuteranopia (no green cones) | #34476F | 0.011 |
| Tritanopia (no blue cones) | #285057 | 0.061 |
| Achromatopsia (no color) | #494949 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4870
#3B4870
oklch(40.9% 0.069 269.5)
- #594817
#594817
oklch(40.9% 0.07 89.6)
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 #3B4870, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.045
- Light Navy #155084 ΔE 0.048
- Dusk #4E5481 ΔE 0.053
- Dusk Blue #26538D ΔE 0.054
- Twilight Blue #0A437A ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.054
- YInMn Blue #415A77 ΔE 0.055
- Twilight #4E518B ΔE 0.058
Use #3B4870 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.