#3B6AAA
Closest named color: French Blue (#436BAD). oklch(52.2% 0.114 256.6), rgb(59, 106, 170).
Aa
White text reads best on this color (5.48:1).
About this color
#3B6AAA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.114 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.010 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #3B6AAA |
| RGB | rgb(59, 106, 170) |
| HSL | hsl(215, 48%, 45%) |
| OKLCH | oklch(52.2% 0.114 256.6) |
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 #3B6AAA | 5.48:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #3B6AAA | 3.82:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #3B6AAA text on white | 5.48:1 | AA | Lc 77.2 | Fine for body text |
| #3B6AAA text on black | 3.82:1 | AA large text | Lc -24.6 | 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
#CCDAEE
oklch(88.4% 0.031 257.2)
-
Step 300
300
#AAC3E5
oklch(81% 0.055 256.1)
-
Step 400
400
#7DA3D7
oklch(70.8% 0.087 256.4)
-
Step 500
500
#5B8BCD
oklch(63.1% 0.113 256.6)
-
Step 600
600
#4074BA
oklch(55.7% 0.123 256.4)
-
Step 700
700 (this color)
#3B6AAA
oklch(52.2% 0.114 256.6)
-
Step 800
800
#2A4F82
oklch(42.6% 0.095 256.9)
-
Step 900
900
#274268
oklch(37.7% 0.073 257.1)
-
Step 950
950
#17273D
oklch(27% 0.047 256.6)
#3B6AAA 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) | #4E6FAD | 0.027 |
| Deuteranopia (no green cones) | #3E64A9 | 0.017 |
| Tritanopia (no blue cones) | #007982 | 0.093 |
| Achromatopsia (no color) | #696969 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B6AAA
#3B6AAA
oklch(52.2% 0.114 256.6)
- #8D5F00
#8D5F00
oklch(52.2% 0.11 76)
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 #3B6AAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.010
- Mid Blue #276AB3 ΔE 0.021
- Flat Blue #3C73A8 ΔE 0.027
- Muted Blue #3B719F ΔE 0.030
- Dusky Blue #475F94 ΔE 0.042
- Ocean Blue #03719C ΔE 0.044
- Windows Blue #3778BF ΔE 0.046
- Dull Blue #49759C ΔE 0.047
Use #3B6AAA 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.