#3F69A1
Closest named color: French Blue (#436BAD). oklch(51.6% 0.101 256.1), rgb(63, 105, 161).
Aa
White text reads best on this color (5.60:1).
About this color
#3F69A1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.101 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.020 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #3F69A1 |
| RGB | rgb(63, 105, 161) |
| HSL | hsl(214, 44%, 44%) |
| OKLCH | oklch(51.6% 0.101 256.1) |
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 #3F69A1 | 5.60:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #3F69A1 | 3.74:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #3F69A1 text on white | 5.60:1 | AA | Lc 77.8 | Fine for body text |
| #3F69A1 text on black | 3.74:1 | AA large text | Lc -23.9 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ACC3E0
oklch(80.9% 0.048 254.3)
-
Step 400
400
#81A3D1
oklch(70.7% 0.078 256.1)
-
Step 500
500
#608BC5
oklch(63% 0.1 256.2)
-
Step 600
600
#4674B2
oklch(55.5% 0.11 256.3)
-
Step 700
700 (this color)
#3F69A1
oklch(51.6% 0.101 256.1)
-
Step 800
800
#2F507C
oklch(42.8% 0.083 256.1)
-
Step 900
900
#2A4264
oklch(37.6% 0.066 257.2)
-
Step 950
950
#19273A
oklch(27% 0.041 256.3)
#3F69A1 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) | #516DA3 | 0.025 |
| Deuteranopia (no green cones) | #4463A0 | 0.017 |
| Tritanopia (no blue cones) | #00767D | 0.087 |
| Achromatopsia (no color) | #686868 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F69A1
#3F69A1
oklch(51.6% 0.101 256.1)
- #895F14
#895F14
oklch(51.8% 0.101 76.1)
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 #3F69A1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.020
- Muted Blue #3B719F ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.028
- Dusky Blue #475F94 ΔE 0.031
- Mid Blue #276AB3 ΔE 0.033
- Denim #3B638C ΔE 0.036
- Ocean Blue #03719C ΔE 0.040
- Dull Blue #49759C ΔE 0.041
Use #3F69A1 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.