#3750AE
Closest named color: Blueberry (#464196). oklch(46.6% 0.153 268.6), rgb(55, 80, 174).
Aa
White text reads best on this color (7.18:1).
About this color
#3750AE is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.153 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.053 away. White text reads best on it, at 7.18:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.92:1 |
| White text | 7.18:1 |
Values
| HEX | #3750AE |
| RGB | rgb(55, 80, 174) |
| HSL | hsl(227, 52%, 45%) |
| OKLCH | oklch(46.6% 0.153 268.6) |
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 #3750AE | 7.18:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #3750AE | 2.92:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #3750AE text on white | 7.18:1 | AAA | Lc 84.6 | Fine for body text |
| #3750AE text on black | 2.92:1 | Fails | Lc -17.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#ADBFF1
oklch(80.8% 0.074 269.3)
-
Step 400
400
#829DEB
oklch(70.7% 0.119 268.7)
-
Step 500
500
#6482E4
oklch(63% 0.151 268.9)
-
Step 600
600
#4C6AD2
oklch(55.6% 0.164 268.5)
-
Step 700
700 (this color)
#3750AE
oklch(46.6% 0.153 268.6)
-
Step 800
800
#334893
oklch(42.7% 0.126 268.8)
-
Step 900
900
#2C3D75
oklch(37.7% 0.098 268.7)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#3750AE 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) | #0C5DB1 | 0.040 |
| Deuteranopia (no green cones) | #0052AC | 0.035 |
| Tritanopia (no blue cones) | #006677 | 0.124 |
| Achromatopsia (no color) | #575757 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3750AE
#3750AE
oklch(46.6% 0.153 268.6)
- #705600
#705600
oklch(46.7% 0.095 88.2)
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 #3750AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.059
- Dusk Blue #26538D ΔE 0.059
- Cobalt #1E488F ΔE 0.062
- Twilight #4E518B ΔE 0.064
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Sapphire #2138AB ΔE 0.067
Use #3750AE 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.