#3F5997
Closest named color: Denim Blue (#3B5B92). oklch(47.4% 0.105 265.4), rgb(63, 89, 151).
Aa
White text reads best on this color (6.80:1).
About this color
#3F5997 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.105 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.012 away. White text reads best on it, at 6.80:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #3F5997 |
| RGB | rgb(63, 89, 151) |
| HSL | hsl(222, 41%, 42%) |
| OKLCH | oklch(47.4% 0.105 265.4) |
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 #3F5997 | 6.80:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #3F5997 | 3.08:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #3F5997 text on white | 6.80:1 | AA | Lc 83.3 | Fine for body text |
| #3F5997 text on black | 3.08:1 | AA large text | Lc -18.6 | 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
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C1E2
oklch(81% 0.05 264.8)
-
Step 400
400
#88A0D4
oklch(70.7% 0.081 265.2)
-
Step 500
500
#6B88C9
oklch(63.2% 0.104 265.2)
-
Step 600
600
#5370B6
oklch(55.5% 0.114 265.8)
-
Step 700
700 (this color)
#3F5997
oklch(47.4% 0.105 265.4)
-
Step 800
800
#384D7F
oklch(42.8% 0.087 265.6)
-
Step 900
900
#304066
oklch(37.6% 0.069 265.9)
-
Step 950
950
#1C263C
oklch(27.1% 0.044 265)
#3F5997 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) | #3F5F99 | 0.017 |
| Deuteranopia (no green cones) | #335796 | 0.016 |
| Tritanopia (no blue cones) | #006770 | 0.096 |
| Achromatopsia (no color) | #5B5B5B | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5997
#3F5997
oklch(47.4% 0.105 265.4)
- #755700
#755700
oklch(47.5% 0.097 85.3)
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 #3F5997, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.012
- Dusky Blue #475F94 ΔE 0.022
- Twilight #4E518B ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.032
- Dusk Blue #26538D ΔE 0.037
- Denim #3B638C ΔE 0.038
- Dusk #4E5481 ΔE 0.039
- Peacock Blue #016795 ΔE 0.053
Use #3F5997 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.