#3967A9
Closest named color: French Blue (#436BAD). oklch(51.4% 0.117 257.6), rgb(57, 103, 169).
Aa
White text reads best on this color (5.69:1).
About this color
#3967A9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.117 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.017 away. White text reads best on it, at 5.69:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #3967A9 |
| RGB | rgb(57, 103, 169) |
| HSL | hsl(215, 50%, 44%) |
| OKLCH | oklch(51.4% 0.117 257.6) |
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 #3967A9 | 5.69:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #3967A9 | 3.68:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #3967A9 text on white | 5.69:1 | AA | Lc 78.3 | Fine for body text |
| #3967A9 text on black | 3.68:1 | AA large text | Lc -23.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CCDAEE
oklch(88.4% 0.031 257.2)
-
Step 300
300
#AAC2E6
oklch(80.8% 0.057 258.4)
-
Step 400
400
#7DA2D9
oklch(70.6% 0.091 258.1)
-
Step 500
500
#5B8ACF
oklch(63% 0.117 257.9)
-
Step 600
600
#4173BC
oklch(55.6% 0.126 257.9)
-
Step 700
700 (this color)
#3967A9
oklch(51.4% 0.117 257.6)
-
Step 800
800
#2B4F83
oklch(42.8% 0.096 257.7)
-
Step 900
900
#274269
oklch(37.7% 0.075 257.6)
-
Step 950
950
#17273E
oklch(27.1% 0.048 257.5)
#3967A9 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) | #4A6CAC | 0.025 |
| Deuteranopia (no green cones) | #3962A8 | 0.014 |
| Tritanopia (no blue cones) | #007680 | 0.094 |
| Achromatopsia (no color) | #676767 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3967A9
#3967A9
oklch(51.4% 0.117 257.6)
- #895E00
#895E00
oklch(51.5% 0.107 77.6)
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 #3967A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.017
- Mid Blue #276AB3 ΔE 0.020
- Flat Blue #3C73A8 ΔE 0.036
- Muted Blue #3B719F ΔE 0.037
- Dusky Blue #475F94 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.045
- Denim #3B638C ΔE 0.046
- Ocean Blue #03719C ΔE 0.047
Use #3967A9 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.