#3549BB
Closest named color: Blue Blue (#2242C7). oklch(46.2% 0.18 270.1), rgb(53, 73, 187).
Aa
White text reads best on this color (7.44:1).
About this color
#3549BB is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.180 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.032 away. White text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.82:1 |
| White text | 7.44:1 |
Values
| HEX | #3549BB |
| RGB | rgb(53, 73, 187) |
| HSL | hsl(231, 56%, 47%) |
| OKLCH | oklch(46.2% 0.18 270.1) |
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 #3549BB | 7.44:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #3549BB | 2.82:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #3549BB text on white | 7.44:1 | AAA | Lc 85.3 | Fine for body text |
| #3549BB text on black | 2.82:1 | Fails | Lc -16.7 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#ABBEFA
oklch(80.9% 0.088 270.8)
-
Step 400
400
#7F9BF7
oklch(70.8% 0.139 269.8)
-
Step 500
500
#617EF4
oklch(63.1% 0.179 270.2)
-
Step 600
600
#4A64E2
oklch(55.5% 0.193 270.1)
-
Step 700
700 (this color)
#3549BB
oklch(46.2% 0.18 270.1)
-
Step 800
800
#31449F
oklch(42.7% 0.149 270)
-
Step 900
900
#2B3A7E
oklch(37.6% 0.116 270.5)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#3549BB 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) | #005BBF | 0.048 |
| Deuteranopia (no green cones) | #004FB9 | 0.034 |
| Tritanopia (no blue cones) | #00667B | 0.144 |
| Achromatopsia (no color) | #555555 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3549BB
#3549BB
oklch(46.2% 0.18 270.1)
- #6D5500
#6D5500
oklch(46.1% 0.094 89.7)
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 #3549BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.032
- Majorelle Blue #3F37C9 ΔE 0.042
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Sapphire #2138AB ΔE 0.056
- Blurple #5539CC ΔE 0.057
- Blueberry #464196 ΔE 0.064
- Warm Blue #4B57DB ΔE 0.068
- Bluey Purple #6241C7 ΔE 0.069
Use #3549BB 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.