#3A63C3
Closest named color: Mid Blue (#276AB3). oklch(52.3% 0.157 264.3), rgb(58, 99, 195).
Aa
White text reads best on this color (5.59:1).
About this color
#3A63C3 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.157 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.036 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #3A63C3 |
| RGB | rgb(58, 99, 195) |
| HSL | hsl(222, 54%, 50%) |
| OKLCH | oklch(52.3% 0.157 264.3) |
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 #3A63C3 | 5.59:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #3A63C3 | 3.75:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #3A63C3 text on white | 5.59:1 | AA | Lc 77.6 | Fine for body text |
| #3A63C3 text on black | 3.75:1 | AA large text | Lc -24.2 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBD9F6
oklch(88.4% 0.043 265)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FED
oklch(70.8% 0.122 264.2)
-
Step 500
500
#5985E7
oklch(63.2% 0.155 264.2)
-
Step 600
600
#3F6CD5
oklch(55.6% 0.169 264.2)
-
Step 700
700 (this color)
#3A63C3
oklch(52.3% 0.157 264.3)
-
Step 800
800
#294A95
oklch(42.8% 0.129 263.9)
-
Step 900
900
#253E77
oklch(37.6% 0.102 264.3)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#3A63C3 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) | #2D6EC7 | 0.029 |
| Deuteranopia (no green cones) | #0062C1 | 0.033 |
| Tritanopia (no blue cones) | #007A8A | 0.127 |
| Achromatopsia (no color) | #686868 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A63C3
#3A63C3
oklch(52.3% 0.157 264.3)
- #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 #3A63C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.036
- French Blue #436BAD ΔE 0.045
- Royal Blue #4169E1 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.051
- Iris #6258C4 ΔE 0.054
- Windows Blue #3778BF ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.066
Use #3A63C3 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.