#3C51A7
Closest named color: Blueberry (#464196). oklch(46.6% 0.14 269.9), rgb(60, 81, 167).
Aa
White text reads best on this color (7.17:1).
About this color
#3C51A7 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.140 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.047 away. White text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #3C51A7 |
| RGB | rgb(60, 81, 167) |
| HSL | hsl(228, 47%, 45%) |
| OKLCH | oklch(46.6% 0.14 269.9) |
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 #3C51A7 | 7.17:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #3C51A7 | 2.92:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #3C51A7 text on white | 7.17:1 | AAA | Lc 84.6 | Fine for body text |
| #3C51A7 text on black | 2.92:1 | Fails | Lc -17.4 | 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
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F3
oklch(88.6% 0.037 268.9)
-
Step 300
300
#AFBFED
oklch(80.8% 0.068 269.9)
-
Step 400
400
#869DE5
oklch(70.7% 0.109 269.9)
-
Step 500
500
#6983DD
oklch(63.1% 0.139 269.9)
-
Step 600
600
#526BCB
oklch(55.7% 0.151 270)
-
Step 700
700 (this color)
#3C51A7
oklch(46.6% 0.14 269.9)
-
Step 800
800
#37498E
oklch(42.8% 0.116 269.9)
-
Step 900
900
#2F3D71
oklch(37.6% 0.091 270.2)
-
Step 950
950
#1C2442
oklch(26.9% 0.057 270.9)
#3C51A7 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) | #205CAA | 0.035 |
| Deuteranopia (no green cones) | #0053A5 | 0.041 |
| Tritanopia (no blue cones) | #006574 | 0.118 |
| Achromatopsia (no color) | #575757 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C51A7
#3C51A7
oklch(46.6% 0.14 269.9)
- #6E5600
#6E5600
oklch(46.5% 0.095 89.9)
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 #3C51A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.047
- Dusk Blue #26538D ΔE 0.050
- Twilight #4E518B ΔE 0.051
- Dusky Blue #475F94 ΔE 0.057
- Cobalt #1E488F ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.065
Use #3C51A7 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.