#3C63BF
Closest named color: Mid Blue (#276AB3). oklch(52.1% 0.151 264.5), rgb(60, 99, 191).
Aa
White text reads best on this color (5.63:1).
About this color
#3C63BF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.151 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.033 away. White text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.72:1 |
| White text | 5.63:1 |
Values
| HEX | #3C63BF |
| RGB | rgb(60, 99, 191) |
| HSL | hsl(222, 52%, 49%) |
| OKLCH | oklch(52.1% 0.151 264.5) |
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 #3C63BF | 5.63:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #3C63BF | 3.72:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #3C63BF text on white | 5.63:1 | AA | Lc 77.8 | Fine for body text |
| #3C63BF text on black | 3.72:1 | AA large text | Lc -23.9 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#A9C1F1
oklch(81% 0.073 264)
-
Step 400
400
#7C9FEA
oklch(70.7% 0.117 264.5)
-
Step 500
500
#5B85E3
oklch(63.1% 0.149 264.4)
-
Step 600
600
#426DD1
oklch(55.7% 0.162 264.3)
-
Step 700
700 (this color)
#3C63BF
oklch(52.1% 0.151 264.5)
-
Step 800
800
#2B4A93
oklch(42.7% 0.126 264.4)
-
Step 900
900
#273F75
oklch(37.8% 0.097 264.3)
-
Step 950
950
#172544
oklch(27% 0.061 264.4)
#3C63BF 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) | #326EC2 | 0.029 |
| Deuteranopia (no green cones) | #1062BD | 0.031 |
| Tritanopia (no blue cones) | #007888 | 0.122 |
| Achromatopsia (no color) | #676767 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C63BF
#3C63BF
oklch(52.1% 0.151 264.5)
- #866300
#866300
oklch(52.1% 0.107 84.3)
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 #3C63BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.033
- French Blue #436BAD ΔE 0.040
- Iris #6258C4 ΔE 0.053
- Royal Blue #4169E1 ΔE 0.054
- Warm Blue #4B57DB ΔE 0.056
- Windows Blue #3778BF ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.061
- Flat Blue #3C73A8 ΔE 0.063
Use #3C63BF 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.