#3E6CB9
Closest named color: French Blue (#436BAD). oklch(53.7% 0.131 260.1), rgb(62, 108, 185).
Aa
White text reads best on this color (5.18:1).
About this color
#3E6CB9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.131 and its hue 260°. 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 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.05:1 |
| White text | 5.18:1 |
Values
| HEX | #3E6CB9 |
| RGB | rgb(62, 108, 185) |
| HSL | hsl(218, 50%, 48%) |
| OKLCH | oklch(53.7% 0.131 260.1) |
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 #3E6CB9 | 5.18:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #3E6CB9 | 4.05:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #3E6CB9 text on white | 5.18:1 | AA | Lc 75.4 | Fine for body text |
| #3E6CB9 text on black | 4.05:1 | AA large text | Lc -26.3 | 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 600.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ABC2E7
oklch(80.9% 0.058 259.9)
-
Step 400
400
#7EA1DC
oklch(70.6% 0.095 260.6)
-
Step 500
500
#5D89D2
oklch(63.1% 0.121 260.1)
-
Step 600
600 (this color)
#3E6CB9
oklch(53.7% 0.131 260.1)
-
Step 700
700
#355FA5
oklch(49.1% 0.122 260)
-
Step 800
800
#2C4E86
oklch(42.8% 0.101 259.9)
-
Step 900
900
#28416B
oklch(37.7% 0.079 260.2)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#3E6CB9 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) | #4973BC | 0.024 |
| Deuteranopia (no green cones) | #3568B7 | 0.015 |
| Tritanopia (no blue cones) | #007E89 | 0.108 |
| Achromatopsia (no color) | #6D6D6D | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E6CB9
#3E6CB9
oklch(53.7% 0.131 260.1)
- #8F6500
#8F6500
oklch(53.7% 0.111 80)
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 #3E6CB9, 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 0.023
- Windows Blue #3778BF ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.037
- Muted Blue #3B719F ΔE 0.047
- Nice Blue #107AB0 ΔE 0.049
- Dull Blue #49759C ΔE 0.059
- Ocean Blue #03719C ΔE 0.062
Use #3E6CB9 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.