#3B48BB
Closest named color: Blue Blue (#2242C7). oklch(46.4% 0.179 272.3), rgb(59, 72, 187).
Aa
White text reads best on this color (7.41:1).
About this color
#3B48BB is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.179 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.037 away. White text reads best on it, at 7.41:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.179) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #3B48BB |
| RGB | rgb(59, 72, 187) |
| HSL | hsl(234, 52%, 48%) |
| OKLCH | oklch(46.4% 0.179 272.3) |
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 #3B48BB | 7.41:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #3B48BB | 2.83:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #3B48BB text on white | 7.41:1 | AAA | Lc 85.3 | Fine for body text |
| #3B48BB text on black | 2.83:1 | Fails | Lc -16.8 | 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 700.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEF9
oklch(81% 0.086 271.9)
-
Step 400
400
#8399F7
oklch(70.6% 0.14 272.4)
-
Step 500
500
#677DF3
oklch(63.1% 0.177 272.4)
-
Step 600
600
#5063E2
oklch(55.7% 0.193 272.1)
-
Step 700
700 (this color)
#3B48BB
oklch(46.4% 0.179 272.3)
-
Step 800
800
#36439F
oklch(42.8% 0.149 272.4)
-
Step 900
900
#2E3A7E
oklch(37.8% 0.115 272.2)
-
Step 950
950
#1B224A
oklch(27% 0.074 273)
#3B48BB 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 | 0.053 |
| Deuteranopia (no green cones) | #0050B9 | 0.041 |
| Tritanopia (no blue cones) | #00657A | 0.146 |
| Achromatopsia (no color) | #555555 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B48BB
#3B48BB
oklch(46.4% 0.179 272.3)
- #6C5700
#6C5700
oklch(46.5% 0.095 92.5)
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 #3B48BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.037
- Majorelle Blue #3F37C9 ΔE 0.040
- Blue With A Hint Of Purple #533CC6 ΔE 0.043
- Blurple #5539CC ΔE 0.051
- Sapphire #2138AB ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.062
- Blueberry #464196 ΔE 0.062
- Warm Blue #4B57DB ΔE 0.066
Use #3B48BB 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.