#3F5576
Closest named color: YInMn Blue (#415A77). oklch(44.6% 0.061 258.3), rgb(63, 85, 118).
Aa
White text reads best on this color (7.57:1).
About this color
#3F5576 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.061 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 7.57:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #3F5576 |
| RGB | rgb(63, 85, 118) |
| HSL | hsl(216, 30%, 35%) |
| OKLCH | oklch(44.6% 0.061 258.3) |
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 #3F5576 | 7.57:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #3F5576 | 2.77:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #3F5576 text on white | 7.57:1 | AAA | Lc 86.3 | Fine for body text |
| #3F5576 text on black | 2.77:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE7
oklch(88.5% 0.02 257.5)
-
Step 300
300
#B3C2D8
oklch(81% 0.035 257.9)
-
Step 400
400
#8BA2C5
oklch(70.7% 0.058 258.7)
-
Step 500
500
#6E8BB6
oklch(63.1% 0.073 258.1)
-
Step 600
600
#5674A2
oklch(55.5% 0.08 258.7)
-
Step 700
700
#46628A
oklch(49.2% 0.073 257.3)
-
Step 800
800 (this color)
#3F5576
oklch(44.6% 0.061 258.3)
-
Step 900
900
#32425B
oklch(37.7% 0.048 259.1)
-
Step 950
950
#1D2735
oklch(27% 0.03 256.9)
#3F5576 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) | #495777 | 0.016 |
| Deuteranopia (no green cones) | #425275 | 0.009 |
| Tritanopia (no blue cones) | #2A5C60 | 0.054 |
| Achromatopsia (no color) | #545454 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5576
#3F5576
oklch(44.6% 0.061 258.3)
- #67502B
#67502B
oklch(44.6% 0.061 78.1)
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 #3F5576, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Dusk #4E5481 ΔE 0.029
- Dusty Grape #545775 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.033
- Twilight #4E518B ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.045
- Dusk Blue #26538D ΔE 0.047
- Denim #3B638C ΔE 0.048
Use #3F5576 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.