#3944B1
Closest named color: Blue Blue (#2242C7). oklch(44.7% 0.172 272.9), rgb(57, 68, 177).
Aa
White text reads best on this color (7.96:1).
About this color
#3944B1 is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.172 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.043 away. White text reads best on it, at 7.96:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.63:1 |
| White text | 7.96:1 |
Values
| HEX | #3944B1 |
| RGB | rgb(57, 68, 177) |
| HSL | hsl(235, 51%, 46%) |
| OKLCH | oklch(44.7% 0.172 272.9) |
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 #3944B1 | 7.96:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #3944B1 | 2.63:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #3944B1 text on white | 7.96:1 | AAA | Lc 87.1 | Fine for body text |
| #3944B1 text on black | 2.63:1 | Fails | Lc -15.0 | Not readable |
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
#CCD7FF
oklch(88.4% 0.057 273.1)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8298FF
oklch(70.8% 0.152 272.8)
-
Step 500
500
#6579FF
oklch(63.1% 0.198 273)
-
Step 600
600
#4E5CF2
oklch(55.6% 0.222 272.7)
-
Step 700
700
#404AD3
oklch(49.1% 0.207 272.8)
-
Step 800
800 (this color)
#3944B1
oklch(44.7% 0.172 272.9)
-
Step 900
900
#2D3687
oklch(37.6% 0.134 273.3)
-
Step 950
950
#1A214F
oklch(27.1% 0.084 273)
#3944B1 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) | #0056B5 | 0.052 |
| Deuteranopia (no green cones) | #004BAF | 0.041 |
| Tritanopia (no blue cones) | #005F74 | 0.139 |
| Achromatopsia (no color) | #515151 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3944B1
#3944B1
oklch(44.7% 0.172 272.9)
- #665200
#665200
oklch(44.6% 0.091 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 #3944B1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.043
- Sapphire #2138AB ΔE 0.044
- Majorelle Blue #3F37C9 ΔE 0.045
- Blueberry #464196 ΔE 0.047
- Blue With A Hint Of Purple #533CC6 ΔE 0.051
- Blurple #5539CC ΔE 0.061
- Cobalt #1E488F ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.066
Use #3944B1 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.