#3B4EB6
Closest named color: Blue Blue (#2242C7). oklch(47.1% 0.165 270.8), rgb(59, 78, 182).
Aa
White text reads best on this color (7.11:1).
About this color
#3B4EB6 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.165 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.049 away. White text reads best on it, at 7.11:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.95:1 |
| White text | 7.11:1 |
Values
| HEX | #3B4EB6 |
| RGB | rgb(59, 78, 182) |
| HSL | hsl(231, 51%, 47%) |
| OKLCH | oklch(47.1% 0.165 270.8) |
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 #3B4EB6 | 7.11:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #3B4EB6 | 2.95:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #3B4EB6 text on white | 7.11:1 | AAA | Lc 84.3 | Fine for body text |
| #3B4EB6 text on black | 2.95:1 | Fails | Lc -17.7 | 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
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBEF5
oklch(80.8% 0.08 271.2)
-
Step 400
400
#839BF0
oklch(70.7% 0.128 270.9)
-
Step 500
500
#6680EB
oklch(63.2% 0.163 270.8)
-
Step 600
600
#4F66DA
oklch(55.6% 0.179 271)
-
Step 700
700 (this color)
#3B4EB6
oklch(47.1% 0.165 270.8)
-
Step 800
800
#354699
oklch(42.8% 0.137 270.9)
-
Step 900
900
#2D3B79
oklch(37.6% 0.107 270.9)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#3B4EB6 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) | #005EBA | 0.049 |
| Deuteranopia (no green cones) | #0053B4 | 0.039 |
| Tritanopia (no blue cones) | #00677A | 0.135 |
| Achromatopsia (no color) | #585858 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4EB6
#3B4EB6
oklch(47.1% 0.165 270.8)
- #6F5800
#6F5800
oklch(47% 0.096 91.1)
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 #3B4EB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.056
- Blueberry #464196 ΔE 0.059
- Blurple #5539CC ΔE 0.063
- Warm Blue #4B57DB ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.067
- Iris #6258C4 ΔE 0.067
Use #3B4EB6 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.