#3F5683
Closest named color: Light Navy Blue (#2E5A88). oklch(45.5% 0.079 263), rgb(63, 86, 131).
Aa
White text reads best on this color (7.31:1).
About this color
#3F5683 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.079 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.020 away. White text reads best on it, at 7.31:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.87:1 |
| White text | 7.31:1 |
Values
| HEX | #3F5683 |
| RGB | rgb(63, 86, 131) |
| HSL | hsl(220, 35%, 38%) |
| OKLCH | oklch(45.5% 0.079 263) |
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 #3F5683 | 7.31:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #3F5683 | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #3F5683 text on white | 7.31:1 | AAA | Lc 85.3 | Fine for body text |
| #3F5683 text on black | 2.87:1 | Fails | Lc -16.7 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#88A1D0
oklch(70.7% 0.075 262.8)
-
Step 500
500
#6B89C3
oklch(63.1% 0.094 263)
-
Step 600
600
#5372B0
oklch(55.6% 0.103 263.2)
-
Step 700
700
#435F97
oklch(49% 0.096 263.1)
-
Step 800
800 (this color)
#3F5683
oklch(45.5% 0.079 263)
-
Step 900
900
#304163
oklch(37.7% 0.063 263.4)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#3F5683 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) | #455A85 | 0.015 |
| Deuteranopia (no green cones) | #3D5382 | 0.010 |
| Tritanopia (no blue cones) | #206066 | 0.072 |
| Achromatopsia (no color) | #565656 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5683
#3F5683
oklch(45.5% 0.079 263)
- #6C521B
#6C521B
oklch(45.5% 0.079 82.8)
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 #3F5683, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.020
- Dusk #4E5481 ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.026
- Twilight #4E518B ΔE 0.029
- Dusk Blue #26538D ΔE 0.034
- Dusky Blue #475F94 ΔE 0.037
- Dusty Grape #545775 ΔE 0.037
Use #3F5683 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.