#3F5992
Closest named color: Denim Blue (#3B5B92). oklch(47.1% 0.098 264.4), rgb(63, 89, 146).
Aa
White text reads best on this color (6.87:1).
About this color
#3F5992 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.098 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.007 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #3F5992 |
| RGB | rgb(63, 89, 146) |
| HSL | hsl(221, 40%, 41%) |
| OKLCH | oklch(47.1% 0.098 264.4) |
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 #3F5992 | 6.87:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #3F5992 | 3.05:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #3F5992 text on white | 6.87:1 | AA | Lc 83.6 | Fine for body text |
| #3F5992 text on black | 3.05:1 | AA large text | Lc -18.3 | 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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0D9EB
oklch(88.4% 0.027 264.4)
-
Step 300
300
#B1C1E0
oklch(80.9% 0.047 263.7)
-
Step 400
400
#89A0D1
oklch(70.6% 0.077 265)
-
Step 500
500
#6C88C5
oklch(63.1% 0.098 264.9)
-
Step 600
600
#5471B1
oklch(55.5% 0.106 264.7)
-
Step 700
700 (this color)
#3F5992
oklch(47.1% 0.098 264.4)
-
Step 800
800
#384E7B
oklch(42.8% 0.08 263.6)
-
Step 900
900
#314163
oklch(37.8% 0.062 264.4)
-
Step 950
950
#1D263A
oklch(27% 0.04 265.3)
#3F5992 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) | #425E94 | 0.015 |
| Deuteranopia (no green cones) | #375791 | 0.012 |
| Tritanopia (no blue cones) | #0B666E | 0.089 |
| Achromatopsia (no color) | #5A5A5A | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5992
#3F5992
oklch(47.1% 0.098 264.4)
- #745600
#745600
oklch(47.2% 0.097 85)
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 #3F5992, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.007
- Dusky Blue #475F94 ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.026
- Twilight #4E518B ΔE 0.028
- Dusk #4E5481 ΔE 0.033
- Denim #3B638C ΔE 0.033
- Dusk Blue #26538D ΔE 0.035
- YInMn Blue #415A77 ΔE 0.046
Use #3F5992 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.