#3A4FC3
Closest named color: Blue Blue (#2242C7). oklch(48.3% 0.182 270.3), rgb(58, 79, 195).
Aa
White text reads best on this color (6.80:1).
About this color
#3A4FC3 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.182 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.042 away. White text reads best on it, at 6.80:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #3A4FC3 |
| RGB | rgb(58, 79, 195) |
| HSL | hsl(231, 54%, 50%) |
| OKLCH | oklch(48.3% 0.182 270.3) |
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 #3A4FC3 | 6.80:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #3A4FC3 | 3.08:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #3A4FC3 text on white | 6.80:1 | AA | Lc 83.0 | Fine for body text |
| #3A4FC3 text on black | 3.08:1 | AA large text | Lc -19.0 | 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
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#ABBEFA
oklch(80.9% 0.088 270.8)
-
Step 400
400
#7F9AF8
oklch(70.6% 0.141 270.4)
-
Step 500
500
#617EF5
oklch(63.1% 0.18 270.2)
-
Step 600
600
#4A64E4
oklch(55.7% 0.196 270.1)
-
Step 700
700 (this color)
#3A4FC3
oklch(48.3% 0.182 270.3)
-
Step 800
800
#3144A0
oklch(42.8% 0.15 270)
-
Step 900
900
#2B3A7F
oklch(37.7% 0.118 270.6)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#3A4FC3 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) | #0061C7 | 0.050 |
| Deuteranopia (no green cones) | #0055C1 | 0.037 |
| Tritanopia (no blue cones) | #006C81 | 0.147 |
| Achromatopsia (no color) | #5B5B5B | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4FC3
#3A4FC3
oklch(48.3% 0.182 270.3)
- #745B00
#745B00
oklch(48.3% 0.099 90)
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 #3A4FC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.042
- Warm Blue #4B57DB ΔE 0.048
- Blue With A Hint Of Purple #533CC6 ΔE 0.049
- Majorelle Blue #3F37C9 ΔE 0.050
- Blurple #5539CC ΔE 0.055
- Bluey Purple #6241C7 ΔE 0.062
- Iris #6258C4 ΔE 0.062
- Azul #1D5DEC ΔE 0.071
Use #3A4FC3 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.