#3D51AC
Closest named color: Blueberry (#464196). oklch(47% 0.147 270.5), rgb(61, 81, 172).
Aa
White text reads best on this color (7.06:1).
About this color
#3D51AC is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.147 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.051 away. White text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #3D51AC |
| RGB | rgb(61, 81, 172) |
| HSL | hsl(229, 48%, 46%) |
| OKLCH | oklch(47% 0.147 270.5) |
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 #3D51AC | 7.06:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #3D51AC | 2.97:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #3D51AC text on white | 7.06:1 | AAA | Lc 84.2 | Fine for body text |
| #3D51AC text on black | 2.97:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD8F4
oklch(88.4% 0.04 271.4)
-
Step 300
300
#AFBFEF
oklch(80.9% 0.07 270.4)
-
Step 400
400
#869CE8
oklch(70.7% 0.114 270.9)
-
Step 500
500
#6982E1
oklch(63.1% 0.146 270.7)
-
Step 600
600
#5169CF
oklch(55.5% 0.159 270.5)
-
Step 700
700 (this color)
#3D51AC
oklch(47% 0.147 270.5)
-
Step 800
800
#374891
oklch(42.8% 0.122 270.6)
-
Step 900
900
#2F3D73
oklch(37.7% 0.094 270.4)
-
Step 950
950
#1B2444
oklch(27% 0.061 270.1)
#3D51AC 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) | #185EAF | 0.041 |
| Deuteranopia (no green cones) | #0054AA | 0.042 |
| Tritanopia (no blue cones) | #006676 | 0.124 |
| Achromatopsia (no color) | #585858 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D51AC
#3D51AC
oklch(47% 0.147 270.5)
- #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 #3D51AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.054
- Twilight #4E518B ΔE 0.058
- Dusk Blue #26538D ΔE 0.058
- Dusky Blue #475F94 ΔE 0.061
- Cobalt #1E488F ΔE 0.064
- Blue Blue #2242C7 ΔE 0.065
- Mid Blue #276AB3 ΔE 0.066
Use #3D51AC 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.