#3B506E
Closest named color: YInMn Blue (#415A77). oklch(42.7% 0.057 257.3), rgb(59, 80, 110).
Aa
White text reads best on this color (8.20:1).
About this color
#3B506E is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.057 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.033 away. White text reads best on it, at 8.20:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.55:1 |
| White text | 8.20:1 |
Values
| HEX | #3B506E |
| RGB | rgb(59, 80, 110) |
| HSL | hsl(215, 30%, 33%) |
| OKLCH | oklch(42.7% 0.057 257.3) |
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 #3B506E | 8.20:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #3B506E | 2.55:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #3B506E text on white | 8.20:1 | AAA | Lc 88.3 | Fine for body text |
| #3B506E text on black | 2.55:1 | Fails | Lc -13.9 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE6
oklch(88.6% 0.019 258.4)
-
Step 300
300
#B3C2D6
oklch(80.9% 0.033 255.6)
-
Step 400
400
#8CA2C2
oklch(70.7% 0.053 257.7)
-
Step 500
500
#708BB3
oklch(63.1% 0.068 258.1)
-
Step 600
600
#58759E
oklch(55.7% 0.073 257.1)
-
Step 700
700
#486287
oklch(49.1% 0.067 257.2)
-
Step 800
800 (this color)
#3B506E
oklch(42.7% 0.057 257.3)
-
Step 900
900
#334259
oklch(37.6% 0.044 258.8)
-
Step 950
950
#1E2734
oklch(27% 0.028 257.5)
#3B506E 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) | #45526F | 0.016 |
| Deuteranopia (no green cones) | #3F4D6D | 0.010 |
| Tritanopia (no blue cones) | #28575A | 0.051 |
| Achromatopsia (no color) | #4F4F4F | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B506E
#3B506E
oklch(42.7% 0.057 257.3)
- #604B2A
#604B2A
oklch(42.7% 0.056 77.7)
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 #3B506E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.033
- Dusk #4E5481 ΔE 0.044
- Dusty Grape #545775 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.049
- Light Navy #155084 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.050
- Dusk Blue #26538D ΔE 0.053
Use #3B506E 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.