#3F5EA0
Closest named color: Dusky Blue (#475F94). oklch(49.1% 0.112 263.8), rgb(63, 94, 160).
Aa
White text reads best on this color (6.32:1).
About this color
#3F5EA0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.112 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.022 away. White text reads best on it, at 6.32:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.32:1 |
| White text | 6.32:1 |
Values
| HEX | #3F5EA0 |
| RGB | rgb(63, 94, 160) |
| HSL | hsl(221, 43%, 44%) |
| OKLCH | oklch(49.1% 0.112 263.8) |
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 #3F5EA0 | 6.32:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #3F5EA0 | 3.32:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #3F5EA0 text on white | 6.32:1 | AA | Lc 81.3 | Fine for body text |
| #3F5EA0 text on black | 3.32:1 | AA large text | Lc -20.6 | 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
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E5
oklch(80.9% 0.055 264.2)
-
Step 400
400
#85A0D7
oklch(70.6% 0.087 264.1)
-
Step 500
500
#6788CD
oklch(63.2% 0.111 264)
-
Step 600
600
#4E71BA
oklch(55.7% 0.121 263.6)
-
Step 700
700 (this color)
#3F5EA0
oklch(49.1% 0.112 263.8)
-
Step 800
800
#344D82
oklch(42.7% 0.094 263.8)
-
Step 900
900
#2D4068
oklch(37.6% 0.073 264)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#3F5EA0 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) | #4164A3 | 0.017 |
| Deuteranopia (no green cones) | #345C9F | 0.014 |
| Tritanopia (no blue cones) | #006D77 | 0.098 |
| Achromatopsia (no color) | #606060 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5EA0
#3F5EA0
oklch(49.1% 0.112 263.8)
- #7C5B00
#7C5B00
oklch(49.2% 0.101 83.9)
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 #3F5EA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.022
- Denim Blue #3B5B92 ΔE 0.024
- Denim #3B638C ΔE 0.039
- French Blue #436BAD ΔE 0.040
- Mid Blue #276AB3 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.045
- Twilight #4E518B ΔE 0.046
- Peacock Blue #016795 ΔE 0.050
Use #3F5EA0 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.