#3948B6
Closest named color: Blue Blue (#2242C7). oklch(45.8% 0.173 271.8), rgb(57, 72, 182).
Aa
White text reads best on this color (7.56:1).
About this color
#3948B6 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.173 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.040 away. White text reads best on it, at 7.56:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #3948B6 |
| RGB | rgb(57, 72, 182) |
| HSL | hsl(233, 52%, 47%) |
| OKLCH | oklch(45.8% 0.173 271.8) |
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 #3948B6 | 7.56:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #3948B6 | 2.77:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #3948B6 text on white | 7.56:1 | AAA | Lc 85.8 | Fine for body text |
| #3948B6 text on black | 2.77:1 | Fails | Lc -16.3 | 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 800.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#AABDFF
oklch(80.8% 0.096 271.7)
-
Step 400
400
#7F98FF
oklch(70.6% 0.153 271.7)
-
Step 500
500
#627AFF
oklch(63.1% 0.198 271.8)
-
Step 600
600
#4B5CF4
oklch(55.6% 0.225 271.9)
-
Step 700
700
#3D4AD4
oklch(49% 0.209 271.8)
-
Step 800
800 (this color)
#3948B6
oklch(45.8% 0.173 271.8)
-
Step 900
900
#2B3788
oklch(37.8% 0.135 271.9)
-
Step 950
950
#19214F
oklch(27% 0.085 272.1)
#3948B6 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) | #005ABA | 0.051 |
| Deuteranopia (no green cones) | #004FB4 | 0.040 |
| Tritanopia (no blue cones) | #006478 | 0.141 |
| Achromatopsia (no color) | #545454 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3948B6
#3948B6
oklch(45.8% 0.173 271.8)
- #6B5500
#6B5500
oklch(45.9% 0.094 91.4)
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 #3948B6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.040
- Majorelle Blue #3F37C9 ΔE 0.045
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Sapphire #2138AB ΔE 0.054
- Blueberry #464196 ΔE 0.055
- Blurple #5539CC ΔE 0.058
- Bluey Purple #6241C7 ΔE 0.067
- Cobalt #1E488F ΔE 0.071
Use #3948B6 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.