#3B506B
Closest named color: YInMn Blue (#415A77). oklch(42.6% 0.052 255), rgb(59, 80, 107).
Aa
White text reads best on this color (8.24:1).
About this color
#3B506B is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.052 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.035 away. White text reads best on it, at 8.24:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.54:1 |
| White text | 8.24:1 |
Values
| HEX | #3B506B |
| RGB | rgb(59, 80, 107) |
| HSL | hsl(214, 29%, 33%) |
| OKLCH | oklch(42.6% 0.052 255) |
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 #3B506B | 8.24:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #3B506B | 2.54:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #3B506B text on white | 8.24:1 | AAA | Lc 88.5 | Fine for body text |
| #3B506B text on black | 2.54:1 | Fails | Lc -13.7 | 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
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D5
oklch(80.9% 0.031 256)
-
Step 400
400
#8CA3BF
oklch(70.7% 0.049 253.5)
-
Step 500
500
#708CAF
oklch(63.2% 0.062 254.3)
-
Step 600
600
#58759B
oklch(55.5% 0.068 255.4)
-
Step 700
700
#486284
oklch(49% 0.063 255.4)
-
Step 800
800 (this color)
#3B506B
oklch(42.6% 0.052 255)
-
Step 900
900
#334357
oklch(37.8% 0.04 254.3)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#3B506B 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) | #46516C | 0.016 |
| Deuteranopia (no green cones) | #404C6A | 0.013 |
| Tritanopia (no blue cones) | #295659 | 0.046 |
| Achromatopsia (no color) | #4F4F4F | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B506B
#3B506B
oklch(42.6% 0.052 255)
- #5F4B2D
#5F4B2D
oklch(42.6% 0.052 76.8)
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 #3B506B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.035
- Dusty Grape #545775 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.046
- Dusk #4E5481 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.052
- Light Navy #155084 ΔE 0.053
Use #3B506B 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.