#3769AD
Closest named color: French Blue (#436BAD). oklch(52% 0.121 256.7), rgb(55, 105, 173).
Aa
White text reads best on this color (5.54:1).
About this color
#3769AD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.121 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.014 away. White text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.78:1 |
| White text | 5.54:1 |
Values
| HEX | #3769AD |
| RGB | rgb(55, 105, 173) |
| HSL | hsl(215, 52%, 45%) |
| OKLCH | oklch(52% 0.121 256.7) |
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 #3769AD | 5.54:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #3769AD | 3.78:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #3769AD text on white | 5.54:1 | AA | Lc 77.4 | Fine for body text |
| #3769AD text on black | 3.78:1 | AA large text | Lc -24.3 | 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
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C3E7
oklch(81% 0.058 256.6)
-
Step 400
400
#7AA3DB
oklch(70.8% 0.094 256.4)
-
Step 500
500
#588BD1
oklch(63.2% 0.12 256.6)
-
Step 600
600
#3D73BE
oklch(55.5% 0.131 257.1)
-
Step 700
700 (this color)
#3769AD
oklch(52% 0.121 256.7)
-
Step 800
800
#284F85
oklch(42.7% 0.1 257)
-
Step 900
900
#25426A
oklch(37.7% 0.077 256.8)
-
Step 950
950
#16273E
oklch(27% 0.049 256.3)
#3769AD 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) | #4A6EB0 | 0.026 |
| Deuteranopia (no green cones) | #3963AC | 0.016 |
| Tritanopia (no blue cones) | #007982 | 0.098 |
| Achromatopsia (no color) | #686868 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3769AD
#3769AD
oklch(52% 0.121 256.7)
- #8C5F00
#8C5F00
oklch(52% 0.109 76.6)
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 #3769AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.014
- Mid Blue #276AB3 ΔE 0.014
- Flat Blue #3C73A8 ΔE 0.033
- Muted Blue #3B719F ΔE 0.036
- Dusky Blue #475F94 ΔE 0.045
- Windows Blue #3778BF ΔE 0.047
- Ocean Blue #03719C ΔE 0.047
- Nice Blue #107AB0 ΔE 0.049
Use #3769AD 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.