#3761B5
Closest named color: Mid Blue (#276AB3). oklch(50.7% 0.141 262.5), rgb(55, 97, 181).
Aa
White text reads best on this color (5.93:1).
About this color
#3761B5 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.141 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.027 away. White text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #3761B5 |
| RGB | rgb(55, 97, 181) |
| HSL | hsl(220, 53%, 46%) |
| OKLCH | oklch(50.7% 0.141 262.5) |
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 #3761B5 | 5.93:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #3761B5 | 3.53:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #3761B5 text on white | 5.93:1 | AA | Lc 79.3 | Fine for body text |
| #3761B5 text on black | 3.53:1 | AA large text | Lc -22.5 | 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
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#A9C1EE
oklch(80.8% 0.069 262.9)
-
Step 400
400
#7CA0E5
oklch(70.7% 0.109 262.8)
-
Step 500
500
#5A87DD
oklch(63.1% 0.139 262.3)
-
Step 600
600
#416FCB
oklch(55.7% 0.151 262.5)
-
Step 700
700 (this color)
#3761B5
oklch(50.7% 0.141 262.5)
-
Step 800
800
#2A4C8E
oklch(42.7% 0.116 262.1)
-
Step 900
900
#264072
oklch(37.8% 0.092 262.2)
-
Step 950
950
#172642
oklch(27.1% 0.056 262)
#3761B5 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) | #366AB8 | 0.024 |
| Deuteranopia (no green cones) | #1C5EB3 | 0.024 |
| Tritanopia (no blue cones) | #007582 | 0.115 |
| Achromatopsia (no color) | #646464 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3761B5
#3761B5
oklch(50.7% 0.141 262.5)
- #825E00
#825E00
oklch(50.6% 0.104 82.4)
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 #3761B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.027
- French Blue #436BAD ΔE 0.036
- Dusky Blue #475F94 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.059
- Iris #6258C4 ΔE 0.062
- Windows Blue #3778BF ΔE 0.063
- Muted Blue #3B719F ΔE 0.063
Use #3761B5 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.