#3662B3
Closest named color: Mid Blue (#276AB3). oklch(50.8% 0.138 261.4), rgb(54, 98, 179).
Aa
White text reads best on this color (5.90:1).
About this color
#3662B3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.138 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.023 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #3662B3 |
| RGB | rgb(54, 98, 179) |
| HSL | hsl(219, 54%, 46%) |
| OKLCH | oklch(50.8% 0.138 261.4) |
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 #3662B3 | 5.90:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #3662B3 | 3.55:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #3662B3 text on white | 5.90:1 | AA | Lc 79.2 | Fine for body text |
| #3662B3 text on black | 3.55:1 | AA large text | Lc -22.6 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#A9C2EC
oklch(81% 0.066 260.7)
-
Step 400
400
#7BA1E3
oklch(70.8% 0.106 261.1)
-
Step 500
500
#5A88DB
oklch(63.2% 0.135 261.4)
-
Step 600
600
#3F70C9
oklch(55.7% 0.148 261.3)
-
Step 700
700 (this color)
#3662B3
oklch(50.8% 0.138 261.4)
-
Step 800
800
#294C8D
oklch(42.6% 0.115 261.5)
-
Step 900
900
#264070
oklch(37.7% 0.089 261.6)
-
Step 950
950
#162642
oklch(27% 0.057 260.9)
#3662B3 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) | #3A6AB6 | 0.023 |
| Deuteranopia (no green cones) | #225FB1 | 0.020 |
| Tritanopia (no blue cones) | #007582 | 0.110 |
| Achromatopsia (no color) | #646464 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3662B3
#3662B3
oklch(50.8% 0.138 261.4)
- #835E00
#835E00
oklch(50.7% 0.105 81.7)
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 #3662B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.023
- French Blue #436BAD ΔE 0.033
- Dusky Blue #475F94 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.056
- Muted Blue #3B719F ΔE 0.059
- Peacock Blue #016795 ΔE 0.061
- Windows Blue #3778BF ΔE 0.061
Use #3662B3 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.