#3C51CF
Closest named color: Warm Blue (#4B57DB). oklch(49.8% 0.195 270.4), rgb(60, 81, 207).
Aa
White text reads best on this color (6.42:1).
About this color
#3C51CF is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.195 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.031 away. White text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.27:1 |
| White text | 6.42:1 |
Values
| HEX | #3C51CF |
| RGB | rgb(60, 81, 207) |
| HSL | hsl(231, 60%, 52%) |
| OKLCH | oklch(49.8% 0.195 270.4) |
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 #3C51CF | 6.42:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #3C51CF | 3.27:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #3C51CF text on white | 6.42:1 | AA | Lc 81.3 | Fine for body text |
| #3C51CF text on black | 3.27:1 | AA large text | Lc -20.5 | 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
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CCD8FD
oklch(88.5% 0.053 271.1)
-
Step 300
300
#A9BEFE
oklch(80.9% 0.094 270.2)
-
Step 400
400
#7D99FE
oklch(70.6% 0.151 270.5)
-
Step 500
500
#5F7CFC
oklch(63.1% 0.192 270.4)
-
Step 600
600
#4861EB
oklch(55.6% 0.209 270.3)
-
Step 700
700 (this color)
#3C51CF
oklch(49.8% 0.195 270.4)
-
Step 800
800
#3042A5
oklch(42.7% 0.16 270.3)
-
Step 900
900
#293983
oklch(37.7% 0.126 270.1)
-
Step 950
950
#18224D
oklch(27% 0.08 270.4)
#3C51CF 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) | #0066D3 | 0.054 |
| Deuteranopia (no green cones) | #0058CD | 0.037 |
| Tritanopia (no blue cones) | #007188 | 0.156 |
| Achromatopsia (no color) | #5F5F5F | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C51CF
#3C51CF
oklch(49.8% 0.195 270.4)
- #795F00
#795F00
oklch(49.8% 0.102 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 #3C51CF, closest first.
No curated palette has a color within ΔE 0.04 of #3C51CF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.031
- Blue Blue #2242C7 ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.052
- Majorelle Blue #3F37C9 ΔE 0.054
- Azul #1D5DEC ΔE 0.054
- Blurple #5539CC ΔE 0.055
- Iris #6258C4 ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.061
Use #3C51CF 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.