#3F5772
Closest named color: YInMn Blue (#415A77). oklch(44.9% 0.053 251.9), rgb(63, 87, 114).
Aa
White text reads best on this color (7.45:1).
About this color
#3F5772 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.053 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.011 away. White text reads best on it, at 7.45:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #3F5772 |
| RGB | rgb(63, 87, 114) |
| HSL | hsl(212, 29%, 35%) |
| OKLCH | oklch(44.9% 0.053 251.9) |
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 #3F5772 | 7.45:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #3F5772 | 2.81:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #3F5772 text on white | 7.45:1 | AAA | Lc 85.9 | Fine for body text |
| #3F5772 text on black | 2.81:1 | Fails | Lc -16.2 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D1DAE5
oklch(88.5% 0.018 253.4)
-
Step 300
300
#B3C2D5
oklch(80.9% 0.032 254.3)
-
Step 400
400
#8AA3BF
oklch(70.6% 0.05 251.4)
-
Step 500
500
#6D8CAF
oklch(63% 0.064 251.9)
-
Step 600
600
#55769B
oklch(55.6% 0.069 251.9)
-
Step 700
700
#456384
oklch(49% 0.064 251.5)
-
Step 800
800 (this color)
#3F5772
oklch(44.9% 0.053 251.9)
-
Step 900
900
#314357
oklch(37.6% 0.041 251.6)
-
Step 950
950
#1D2733
oklch(26.9% 0.027 253.3)
#3F5772 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) | #4D5873 | 0.020 |
| Deuteranopia (no green cones) | #465371 | 0.014 |
| Tritanopia (no blue cones) | #2C5D60 | 0.046 |
| Achromatopsia (no color) | #555555 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5772
#3F5772
oklch(44.9% 0.053 251.9)
- #685033
#685033
oklch(44.9% 0.054 71)
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 #3F5772, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.011
- Dusty Grape #545775 ΔE 0.030
- Dusk #4E5481 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.038
- Denim #3B638C ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.051
- Slate #516572 ΔE 0.052
- Petrol #005F6A ΔE 0.053
Use #3F5772 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.