#3148DF
Closest named color: Blue Blue (#2242C7). oklch(49.1% 0.228 268.8), rgb(49, 72, 223).
Aa
White text reads best on this color (6.72:1).
About this color
#3148DF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.228 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.045 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.228) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #3148DF |
| RGB | rgb(49, 72, 223) |
| HSL | hsl(232, 73%, 53%) |
| OKLCH | oklch(49.1% 0.228 268.8) |
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 #3148DF | 6.72:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #3148DF | 3.12:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #3148DF text on white | 6.72:1 | AA | Lc 82.3 | Fine for body text |
| #3148DF text on black | 3.12:1 | AA large text | Lc -19.6 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#597CFF
oklch(63% 0.198 268.8)
-
Step 600
600
#3D5AFF
oklch(55.6% 0.245 268.8)
-
Step 700
700 (this color)
#3148DF
oklch(49.1% 0.228 268.8)
-
Step 800
800
#283DB4
oklch(42.8% 0.188 268.7)
-
Step 900
900
#23368E
oklch(37.7% 0.147 268.8)
-
Step 950
950
#142153
oklch(27% 0.093 268.5)
#3148DF 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) | #0064E4 | 0.061 |
| Deuteranopia (no green cones) | #0053DC | 0.031 |
| Tritanopia (no blue cones) | #00728E | 0.177 |
| Achromatopsia (no color) | #5C5C5C | 0.229 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3148DF
#3148DF
oklch(49.1% 0.228 268.8)
- #785D00
#785D00
oklch(49.2% 0.101 88.9)
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 #3148DF, closest first.
No curated palette has a color within ΔE 0.04 of #3148DF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.045
- Azul #1D5DEC ΔE 0.048
- Warm Blue #4B57DB ΔE 0.049
- Majorelle Blue #3F37C9 ΔE 0.050
- Vibrant Blue #0339F8 ΔE 0.055
- Electric Blue #0652FF ΔE 0.056
- Light Royal Blue #3A2EFE ΔE 0.057
- Blurple #5539CC ΔE 0.061
Use #3148DF 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.