#2B63C9
Closest named color: Mid Blue (#276AB3). oklch(52.1% 0.17 261.2), rgb(43, 99, 201).
Aa
White text reads best on this color (5.62:1).
About this color
#2B63C9 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.170 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.042 away. White text reads best on it, at 5.62:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #2B63C9 |
| RGB | rgb(43, 99, 201) |
| HSL | hsl(219, 65%, 48%) |
| OKLCH | oklch(52.1% 0.17 261.2) |
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 #2B63C9 | 5.62:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #2B63C9 | 3.73:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #2B63C9 text on white | 5.62:1 | AA | Lc 77.7 | Fine for body text |
| #2B63C9 text on black | 3.73:1 | AA large text | Lc -24.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A3C2F6
oklch(81% 0.081 260.6)
-
Step 400
400
#71A0F2
oklch(70.7% 0.131 261)
-
Step 500
500
#4C85ED
oklch(63% 0.168 261.3)
-
Step 600
600
#2F6CDC
oklch(55.5% 0.183 261.3)
-
Step 700
700 (this color)
#2B63C9
oklch(52.1% 0.17 261.2)
-
Step 800
800
#1E4A9A
oklch(42.7% 0.14 261.2)
-
Step 900
900
#1E3F7B
oklch(37.8% 0.109 261.2)
-
Step 950
950
#122548
oklch(27% 0.07 261.5)
#2B63C9 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) | #216FCD | 0.031 |
| Deuteranopia (no green cones) | #0061C7 | 0.021 |
| Tritanopia (no blue cones) | #007C8C | 0.133 |
| Achromatopsia (no color) | #676767 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B63C9
#2B63C9
oklch(52.1% 0.17 261.2)
- #886100
#886100
oklch(52% 0.107 81.1)
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 #2B63C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.042
- Royal Blue #4169E1 ΔE 0.046
- Warm Blue #4B57DB ΔE 0.049
- French Blue #436BAD ΔE 0.057
- Azul #1D5DEC ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.061
- Neon Blue #4361EE ΔE 0.062
- Windows Blue #3778BF ΔE 0.064
Use #2B63C9 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.