#3A4FB4
Closest named color: Blue Blue (#2242C7). oklch(47.1% 0.162 270.2), rgb(58, 79, 180).
Aa
White text reads best on this color (7.10:1).
About this color
#3A4FB4 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.162 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #3A4FB4 |
| RGB | rgb(58, 79, 180) |
| HSL | hsl(230, 51%, 47%) |
| OKLCH | oklch(47.1% 0.162 270.2) |
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 #3A4FB4 | 7.10:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #3A4FB4 | 2.95:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #3A4FB4 text on white | 7.10:1 | AAA | Lc 84.2 | Fine for body text |
| #3A4FB4 text on black | 2.95:1 | Fails | Lc -17.8 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBFF4
oklch(81% 0.078 270)
-
Step 400
400
#839CEF
oklch(70.8% 0.125 270.2)
-
Step 500
500
#6581E9
oklch(63.2% 0.159 270)
-
Step 600
600
#4E67D7
oklch(55.5% 0.174 270.4)
-
Step 700
700 (this color)
#3A4FB4
oklch(47.1% 0.162 270.2)
-
Step 800
800
#344697
oklch(42.6% 0.134 270.3)
-
Step 900
900
#2D3C78
oklch(37.7% 0.104 270.2)
-
Step 950
950
#1A2446
oklch(27.1% 0.065 269.4)
#3A4FB4 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) | #005EB7 | 0.047 |
| Deuteranopia (no green cones) | #0053B2 | 0.038 |
| Tritanopia (no blue cones) | #00677A | 0.131 |
| Achromatopsia (no color) | #585858 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4FB4
#3A4FB4
oklch(47.1% 0.162 270.2)
- #705800
#705800
oklch(47.1% 0.096 90.3)
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 #3A4FB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Blueberry #464196 ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.060
- Blurple #5539CC ΔE 0.067
- Denim Blue #3B5B92 ΔE 0.068
- Iris #6258C4 ΔE 0.068
- Sapphire #2138AB ΔE 0.068
Use #3A4FB4 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.