#3669A7
Closest named color: French Blue (#436BAD). oklch(51.6% 0.113 254.6), rgb(54, 105, 167).
Aa
White text reads best on this color (5.62:1).
About this color
#3669A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.113 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.018 away. White text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #3669A7 |
| RGB | rgb(54, 105, 167) |
| HSL | hsl(213, 51%, 43%) |
| OKLCH | oklch(51.6% 0.113 254.6) |
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 #3669A7 | 5.62:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #3669A7 | 3.73:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #3669A7 text on white | 5.62:1 | AA | Lc 77.9 | Fine for body text |
| #3669A7 text on black | 3.73:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#A9C3E4
oklch(80.9% 0.055 254.5)
-
Step 400
400
#7BA3D7
oklch(70.6% 0.088 255.3)
-
Step 500
500
#588CCC
oklch(63.1% 0.112 254.4)
-
Step 600
600
#3D75B9
oklch(55.7% 0.122 254.6)
-
Step 700
700 (this color)
#3669A7
oklch(51.6% 0.113 254.6)
-
Step 800
800
#285081
oklch(42.7% 0.094 254.7)
-
Step 900
900
#254367
oklch(37.8% 0.072 254)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#3669A7 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) | #4D6DAA | 0.029 |
| Deuteranopia (no green cones) | #3D63A6 | 0.017 |
| Tritanopia (no blue cones) | #007780 | 0.089 |
| Achromatopsia (no color) | #676767 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3669A7
#3669A7
oklch(51.6% 0.113 254.6)
- #8C5D00
#8C5D00
oklch(51.6% 0.109 74.8)
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 #3669A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.018
- Mid Blue #276AB3 ΔE 0.021
- Muted Blue #3B719F ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.030
- Dusky Blue #475F94 ΔE 0.038
- Ocean Blue #03719C ΔE 0.040
- Peacock Blue #016795 ΔE 0.043
- Denim #3B638C ΔE 0.043
Use #3669A7 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.