#3765AC
Closest named color: Mid Blue (#276AB3). oklch(51% 0.124 258.8), rgb(55, 101, 172).
Aa
White text reads best on this color (5.80:1).
About this color
#3765AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.124 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.018 away. White text reads best on it, at 5.80:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #3765AC |
| RGB | rgb(55, 101, 172) |
| HSL | hsl(216, 52%, 45%) |
| OKLCH | oklch(51% 0.124 258.8) |
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 #3765AC | 5.80:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #3765AC | 3.61:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #3765AC text on white | 5.80:1 | AA | Lc 78.8 | Fine for body text |
| #3765AC text on black | 3.61:1 | AA large text | Lc -23.0 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#AAC2E8
oklch(80.9% 0.06 259.5)
-
Step 400
400
#7CA2DC
oklch(70.7% 0.095 258.6)
-
Step 500
500
#5A8AD3
oklch(63.2% 0.122 258.5)
-
Step 600
600
#4072C0
oklch(55.6% 0.133 259)
-
Step 700
700 (this color)
#3765AC
oklch(51% 0.124 258.8)
-
Step 800
800
#2A4E86
oklch(42.7% 0.102 259)
-
Step 900
900
#26416C
oklch(37.6% 0.081 259.3)
-
Step 950
950
#17273F
oklch(27.2% 0.05 258.3)
#3765AC 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) | #446BAF | 0.023 |
| Deuteranopia (no green cones) | #3260AB | 0.016 |
| Tritanopia (no blue cones) | #007580 | 0.099 |
| Achromatopsia (no color) | #656565 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3765AC
#3765AC
oklch(51% 0.124 258.8)
- #865D00
#865D00
oklch(50.9% 0.106 78.7)
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 #3765AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.018
- French Blue #436BAD ΔE 0.022
- Dusky Blue #475F94 ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.043
- Muted Blue #3B719F ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.046
- Peacock Blue #016795 ΔE 0.050
- Denim #3B638C ΔE 0.051
Use #3765AC 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.