#3767A5
Closest named color: French Blue (#436BAD). oklch(51% 0.112 255.7), rgb(55, 103, 165).
Aa
White text reads best on this color (5.75:1).
About this color
#3767A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.112 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.021 away. White text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.64:1 |
| White text | 5.75:1 |
Values
| HEX | #3767A5 |
| RGB | rgb(55, 103, 165) |
| HSL | hsl(214, 50%, 43%) |
| OKLCH | oklch(51% 0.112 255.7) |
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 #3767A5 | 5.75:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #3767A5 | 3.64:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #3767A5 text on white | 5.75:1 | AA | Lc 78.6 | Fine for body text |
| #3767A5 text on black | 3.64:1 | AA large text | Lc -23.2 | 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
#CCDAED
oklch(88.4% 0.03 256)
-
Step 300
300
#AAC3E4
oklch(81% 0.054 255.4)
-
Step 400
400
#7CA3D6
oklch(70.7% 0.087 255.4)
-
Step 500
500
#5A8BCB
oklch(63% 0.111 255.6)
-
Step 600
600
#4074B8
oklch(55.5% 0.12 255.9)
-
Step 700
700 (this color)
#3767A5
oklch(51% 0.112 255.7)
-
Step 800
800
#2A5081
oklch(42.8% 0.093 255.6)
-
Step 900
900
#264267
oklch(37.6% 0.072 255.9)
-
Step 950
950
#17273C
oklch(27% 0.045 255.6)
#3767A5 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) | #4C6BA8 | 0.027 |
| Deuteranopia (no green cones) | #3C61A4 | 0.017 |
| Tritanopia (no blue cones) | #00757E | 0.090 |
| Achromatopsia (no color) | #666666 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3767A5
#3767A5
oklch(51% 0.112 255.7)
- #895C00
#895C00
oklch(51.1% 0.107 75.8)
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 #3767A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.021
- Mid Blue #276AB3 ΔE 0.024
- Dusky Blue #475F94 ΔE 0.033
- Muted Blue #3B719F ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.035
- Denim #3B638C ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.041
- Peacock Blue #016795 ΔE 0.041
Use #3767A5 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.