#3F69AF
Closest named color: French Blue (#436BAD). oklch(52.5% 0.12 260.1), rgb(63, 105, 175).
Aa
White text reads best on this color (5.45:1).
About this color
#3F69AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.120 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.009 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #3F69AF |
| RGB | rgb(63, 105, 175) |
| HSL | hsl(218, 47%, 47%) |
| OKLCH | oklch(52.5% 0.12 260.1) |
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 #3F69AF | 5.45:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #3F69AF | 3.85:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #3F69AF text on white | 5.45:1 | AA | Lc 77.0 | Fine for body text |
| #3F69AF text on black | 3.85:1 | AA large text | Lc -24.8 | 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 600.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ADC2E4
oklch(81% 0.053 260)
-
Step 400
400
#81A2D7
oklch(70.8% 0.086 259.7)
-
Step 500
500
#618ACC
oklch(63.2% 0.11 259.6)
-
Step 600
600 (this color)
#3F69AF
oklch(52.5% 0.12 260.1)
-
Step 700
700
#3960A0
oklch(49.2% 0.112 259.8)
-
Step 800
800
#304E81
oklch(42.6% 0.092 260.4)
-
Step 900
900
#2A4168
oklch(37.6% 0.073 260.4)
-
Step 950
950
#19263D
oklch(26.9% 0.047 261.3)
#3F69AF 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) | #4A6FB2 | 0.022 |
| Deuteranopia (no green cones) | #3A65AE | 0.013 |
| Tritanopia (no blue cones) | #007983 | 0.101 |
| Achromatopsia (no color) | #696969 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F69AF
#3F69AF
oklch(52.5% 0.12 260.1)
- #8B6200
#8B6200
oklch(52.5% 0.109 80)
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 #3F69AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.009
- Mid Blue #276AB3 ΔE 0.020
- Flat Blue #3C73A8 ΔE 0.033
- Muted Blue #3B719F ΔE 0.038
- Windows Blue #3778BF ΔE 0.044
- Dusky Blue #475F94 ΔE 0.046
- Nice Blue #107AB0 ΔE 0.051
- Dull Blue #49759C ΔE 0.053
Use #3F69AF 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.