#3768C7
Closest named color: Mid Blue (#276AB3). oklch(53.5% 0.158 262), rgb(55, 104, 199).
Aa
White text reads best on this color (5.29:1).
About this color
#3768C7 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.158 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.036 away. White text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #3768C7 |
| RGB | rgb(55, 104, 199) |
| HSL | hsl(220, 57%, 50%) |
| OKLCH | oklch(53.5% 0.158 262) |
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 #3768C7 | 5.29:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #3768C7 | 3.96:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #3768C7 text on white | 5.29:1 | AA | Lc 75.9 | Fine for body text |
| #3768C7 text on black | 3.96:1 | AA large text | Lc -25.8 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A8C1EF
oklch(80.8% 0.071 262.5)
-
Step 400
400
#79A0E7
oklch(70.6% 0.113 261.9)
-
Step 500
500
#5787E0
oklch(63.1% 0.144 261.7)
-
Step 600
600 (this color)
#3768C7
oklch(53.5% 0.158 262)
-
Step 700
700
#2F5CB2
oklch(49.1% 0.146 261.8)
-
Step 800
800
#284B90
oklch(42.6% 0.121 262.3)
-
Step 900
900
#254073
oklch(37.8% 0.093 261.9)
-
Step 950
950
#162643
oklch(27.1% 0.058 261.5)
#3768C7 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) | #3473CB | 0.029 |
| Deuteranopia (no green cones) | #0A65C5 | 0.029 |
| Tritanopia (no blue cones) | #007E8E | 0.124 |
| Achromatopsia (no color) | #6B6B6B | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3768C7
#3768C7
oklch(53.5% 0.158 262)
- #8D6600
#8D6600
oklch(53.6% 0.11 82.2)
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 #3768C7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.036
- Royal Blue #4169E1 ΔE 0.042
- French Blue #436BAD ΔE 0.044
- Windows Blue #3778BF ΔE 0.048
- Warm Blue #4B57DB ΔE 0.055
- Iris #6258C4 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.061
- Cerulean Blue #056EEE ΔE 0.062
Use #3768C7 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.