#3A6EB8
Closest named color: French Blue (#436BAD). oklch(53.9% 0.129 257.5), rgb(58, 110, 184).
Aa
White text reads best on this color (5.11:1).
About this color
#3A6EB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.129 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.019 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #3A6EB8 |
| RGB | rgb(58, 110, 184) |
| HSL | hsl(215, 52%, 47%) |
| OKLCH | oklch(53.9% 0.129 257.5) |
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 #3A6EB8 | 5.11:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #3A6EB8 | 4.10:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #3A6EB8 text on white | 5.11:1 | AA | Lc 75.0 | Fine for body text |
| #3A6EB8 text on black | 4.10:1 | AA large text | Lc -26.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C2E7
oklch(80.8% 0.059 258.1)
-
Step 400
400
#7CA2DA
oklch(70.6% 0.093 257.9)
-
Step 500
500
#5A8AD0
oklch(63% 0.118 257.8)
-
Step 600
600 (this color)
#3A6EB8
oklch(53.9% 0.129 257.5)
-
Step 700
700
#3160A3
oklch(49% 0.119 257.6)
-
Step 800
800
#294F84
oklch(42.7% 0.099 257.1)
-
Step 900
900
#26426A
oklch(37.8% 0.077 257.4)
-
Step 950
950
#17273E
oklch(27.1% 0.048 257.5)
#3A6EB8 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) | #4C74BB | 0.027 |
| Deuteranopia (no green cones) | #3968B6 | 0.017 |
| Tritanopia (no blue cones) | #007F8A | 0.103 |
| Achromatopsia (no color) | #6E6E6E | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A6EB8
#3A6EB8
oklch(53.9% 0.129 257.5)
- #926400
#926400
oklch(53.8% 0.112 77.3)
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 #3A6EB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.019
- Mid Blue #276AB3 ΔE 0.022
- Windows Blue #3778BF ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.032
- Muted Blue #3B719F ΔE 0.043
- Nice Blue #107AB0 ΔE 0.043
- Dull Blue #49759C ΔE 0.055
- Ocean Blue #03719C ΔE 0.057
Use #3A6EB8 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.